chore(deps): update module github.com/sigstore/cosign/v2 to v2.6.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/sigstore/cosign/v2	v2.5.2 -> v2.6.1

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Warning

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Release Notes

sigstore/cosign (github.com/sigstore/cosign/v2)

v2.6.1

Compare Source

Bug Fixes

• Partially populate the output of cosign verify when working with new bundles (#​4416)
• Bump sigstore-go, move conformance back to tagged release (#​4426)

v2.6.0

Compare Source

v2.6.0 introduces a number of new features, including:

• Signing an in-toto statement rather than Cosign constructing one from a predicate, along with verifying a statement's subject using a digest and digest algorithm rather than providing a file reference (#​4306)
• Uploading a signature and its verification material (a "bundle") as an OCI Image 1.1 referring artifact, completing #​3927 (#​4316)
• Providing service URLs for signing and attesting using a SigningConfig. Note that this is required when using a Rekor v2 instance (#​4319)

Example generation and verification of a signed in-toto statement:

cosign attest-blob --new-bundle-format=true --bundle="digest-key-test.sigstore.json" --key="cosign.key" --statement="../sigstore-go/examples/sigstore-go-signing/intoto.txt"
cosign verify-blob-attestation --bundle="digest-key-test.sigstore.json" --key=cosign.pub --type=unused --digest="b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9" --digestAlg="sha256"

Example container signing and verification using the new bundle format and referring artifacts:

cosign sign --new-bundle-format=true ghcr.io/user/alpine@sha256:a19367999603840546b8612572e338ec076c6d1f2fec61760a9e11410f546733
cosign verify --new-bundle-format=true ghcr.io/user/alpine@sha256:a19367999603840546b8612572e338ec076c6d1f2fec61760a9e11410f546733

Example usage of a signing config provided by the public good instance's TUF repository:

cosign sign-blob --use-signing-config --bundle sigstore.json README.md
cosign verify-blob --new-bundle-format --bundle sigstore.json --certificate-identity $EMAIL --certificate-oidc-issuer $ISSUER --use-signed-timestamps README.md

v2.6.0 leverages sigstore-go's signing and verification APIs gated behind these new flags. In an upcoming major release, we will be
updating Cosign to default to producing and consuming bundles to align with all other Sigstore SDKs.

Features

• Add to attest-blob the ability to supply a complete in-toto statement, and add to verify-blob-attestation the ability to verify with just a digest (#​4306)
• Have cosign sign support bundle format (#​4316)
• Add support for SigningConfig for sign-blob/attest-blob, support Rekor v2 (#​4319)
• Add support for SigningConfig in sign/attest (#​4371)
• Support self-managed keys when signing with sigstore-go (#​4368)
• Don't require timestamps when verifying with a key (#​4337)
• Don't load content from TUF if trusted root path is specified (#​4347)
• Add a terminal spinner while signing with sigstore-go (#​4402)
• Require exclusively a SigningConfig or service URLs when signing (#​4403)
• Remove SHA256 assumption in sign-blob/verify-blob (#​4050)
• Bump sigstore-go, support alternative hash algorithms with keys (#​4386)

Breaking API Changes

• sign.SignerFromKeyOpts no longer generates a key. Instead, it returns whether or not the client needs to generate a key, and if so, clients
  should call sign.KeylessSigner. This allows clients to more easily manage key generation.

Bug Fixes

• Verify subject with bundle only when checking claims (#​4320)
• Fixes to cosign sign / verify for the new bundle format (#​4346)

v2.5.3

Compare Source

Features

• Add signing-config create command (#​4280)
• Allow multiple services to be specified for trusted-root create (#​4285)
• feat: Add OCI 1.1+ experimental support to tree (#​4205)
• Add validity period end for trusted-root create (#​4271)

Bug Fixes

• Fix cert verification logic for trusted-root/SCTs (#​4294)
• force when copying the latest image to overwrite (#​4298)
• avoid double-loading trustedroot from file (#​4264)

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[renovate]

ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 73 additional dependencies were updated
• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.24.0 -> 1.24.6
cloud.google.com/go	v0.121.2 -> v0.121.6
cloud.google.com/go/auth	v0.16.2 -> v0.16.5
cloud.google.com/go/compute/metadata	v0.7.0 -> v0.8.0
cloud.google.com/go/storage	v1.55.0 -> v1.56.1
cuelabs.dev/go/oci/ociregistry	v0.0.0-20241125120445-2c00c104c6e1 -> v0.0.0-20250715075730-49cab49c8e9d
cuelang.org/go	v0.12.1 -> v0.14.1
github.com/Azure/azure-sdk-for-go/sdk/azcore	v1.18.0 -> v1.18.2
github.com/Azure/azure-sdk-for-go/sdk/azidentity	v1.10.1 -> v1.11.0
github.com/Azure/azure-sdk-for-go/sdk/internal	v1.11.1 -> v1.11.2
github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azkeys	v1.3.1 -> v1.4.0
github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal	v1.1.1 -> v1.2.0
github.com/Azure/azure-sdk-for-go/sdk/storage/azblob	v1.6.1 -> v1.6.2
github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric	v0.51.0 -> v0.53.0
github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping	v0.51.0 -> v0.53.0
github.com/aws/aws-sdk-go	v1.55.7 -> v1.55.8
github.com/aws/aws-sdk-go-v2/service/ecr	v1.43.3 -> v1.45.1
github.com/aws/aws-sdk-go-v2/service/ecrpublic	v1.32.2 -> v1.33.2
github.com/aws/aws-sdk-go-v2/service/kms	v1.41.0 -> v1.44.2
github.com/awslabs/amazon-ecr-credential-helper/ecr-login	v0.9.1 -> v0.10.1
github.com/buildkite/agent/v3	v3.98.2 -> v3.104.0
github.com/buildkite/go-pipeline	v0.13.3 -> v0.15.0
github.com/buildkite/roko	v1.3.1 -> v1.4.0
github.com/emicklei/go-restful/v3	v3.11.0 -> v3.12.2
github.com/emicklei/proto	v1.13.4 -> v1.14.2
github.com/fxamacker/cbor/v2	v2.7.0 -> v2.9.0
github.com/go-jose/go-jose/v4	v4.1.1 -> v4.1.2
github.com/go-openapi/errors	v0.22.1 -> v0.22.2
github.com/go-openapi/swag	v0.23.1 -> v0.24.1
github.com/go-piv/piv-go/v2	v2.3.0 -> v2.4.0
github.com/go-playground/validator/v10	v10.26.0 -> v10.27.0
github.com/golang-jwt/jwt/v5	v5.2.2 -> v5.3.0
github.com/google/gnostic-models	v0.6.9 -> v0.7.0
github.com/google/rpmpack	v0.7.0 -> v0.7.1
github.com/googleapis/gax-go/v2	v2.14.2 -> v2.15.0
github.com/in-toto/attestation	v1.1.1 -> v1.1.2
github.com/jellydator/ttlcache/v3	v3.3.0 -> v3.4.0
github.com/modern-go/reflect2	v1.0.2 -> v1.0.3-0.20250322232337-35a7c28c31ee
github.com/open-policy-agent/opa	v1.5.1 -> v1.8.0
github.com/prometheus/client_golang	v1.22.0 -> v1.23.2
github.com/prometheus/common	v0.64.0 -> v0.66.1
github.com/protocolbuffers/txtpbfmt	v0.0.0-20241112170944-20d2c9ebc01d -> v0.0.0-20250627152318-f293424e46b5
github.com/secure-systems-lab/go-securesystemslib	v0.9.0 -> v0.9.1
github.com/sergi/go-diff	v1.3.2-0.20230802210424-5b0b94c5c0d3 -> v1.4.0
github.com/sigstore/protobuf-specs	v0.4.3 -> v0.5.0
github.com/sigstore/rekor	v1.3.10 -> v1.4.2
github.com/sigstore/rekor-tiles	v0.1.5 -> v0.1.11
github.com/sigstore/sigstore	v1.9.5 -> v1.9.6-0.20250729224751-181c5d3339b3
github.com/sigstore/sigstore-go	v1.0.0 -> v1.1.3
github.com/sigstore/sigstore/pkg/signature/kms/gcp	v1.9.5 -> v1.9.6-0.20250729224751-181c5d3339b3
github.com/sigstore/timestamp-authority	v1.2.8 -> v1.2.9
github.com/spf13/cobra	v1.9.1 -> v1.10.1
github.com/spf13/pflag	v1.0.7 -> v1.0.10
github.com/spiffe/go-spiffe/v2	v2.5.0 -> v2.6.0
github.com/tchap/go-patricia/v2	v2.3.2 -> v2.3.3
github.com/theupdateframework/go-tuf/v2	v2.1.1 -> v2.2.0
github.com/ulikunitz/xz	v0.5.12 -> v0.5.14
github.com/vektah/gqlparser/v2	v2.5.27 -> v2.5.30
gitlab.com/gitlab-org/api/client-go	v0.130.1 -> v0.143.3
go.opentelemetry.io/contrib/detectors/gcp	v1.36.0 -> v1.38.0
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp	v0.61.0 -> v0.62.0
golang.org/x/exp	v0.0.0-20250408133849-7e4ce0ab07d0 -> v0.0.0-20250620022241-b7579e27df2b
golang.org/x/mod	v0.27.0 -> v0.28.0
golang.org/x/oauth2	v0.30.0 -> v0.31.0
google.golang.org/api	v0.242.0 -> v0.248.0
google.golang.org/genproto	v0.0.0-20250505200425-f936aa4a68b2 -> v0.0.0-20250603155806-513f23925822
k8s.io/api	v0.33.1 -> v0.34.1
k8s.io/apimachinery	v0.33.1 -> v0.34.1
k8s.io/client-go	v0.33.1 -> v0.34.1
k8s.io/kube-openapi	v0.0.0-20250318190949-c8a335a9a2ff -> v0.0.0-20250710124328-f3f2b991d03b
k8s.io/utils	v0.0.0-20250321185631-1f6e0b77f77e -> v0.0.0-20250604170112-4c0f3b243397
sigs.k8s.io/json	v0.0.0-20241010143419-9aa6b5e7a4b3 -> v0.0.0-20241014173422-cfa47c3a1cc8
sigs.k8s.io/release-utils	v0.11.1 -> v0.12.1
sigs.k8s.io/yaml	v1.4.0 -> v1.6.0