Update module github.com/sigstore/fulcio to v1.8.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/sigstore/fulcio	v1.8.7 → v1.8.8

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Release Notes

sigstore/fulcio (github.com/sigstore/fulcio)

v1.8.8

Compare Source

Changelog

• a783aca Include CT log error body in logs (#​2393)
• 965cddd update builder to use go1.26.4 (#​2388)
• 80d8405 Add --ct-log-origin flag (#​2392)
• 7074b70 build(deps): bump actions/checkout from 6.0.3 to 7.0.0 (#​2383)
• 16cc54e docs: clarify RSA_PSS algorithm and ignored field in proto (#​2378)
• 6b2c67d Update fulcio to have configurable hsm-caroot-id rather than hardcoded (#​2377)

Thanks for all contributors!

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[renovate]

ℹ️ Artifact update notice

File name: image/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):

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

Details:

Package	Change
go	1.25.7 -> 1.26.0
github.com/coreos/go-oidc/v3	v3.18.0 -> v3.19.0
github.com/google/go-containerregistry	v0.21.6 -> v0.21.7
google.golang.org/genproto/googleapis/rpc	v0.0.0-20260526163538-3dc84a4a5aaa -> v0.0.0-20260610212136-7ab31c22f7ad
google.golang.org/protobuf	v1.36.11 -> v1.36.12-0.20260120151049-f2248ac996af

[mtrmac]

We don’t want to update to Go 1.26 yet, and anyway this contains no changes to the vendored parts of Fulcio.

[renovate]

Renovate Ignore Notification

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