deps(deps): update module github.com/sigstore/cosign/v2 to v3

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/google/go-containerregistry v0.20.3
 	github.com/onsi/ginkgo/v2 v2.22.2
 	github.com/onsi/gomega v1.36.2
-	github.com/sigstore/cosign/v2 v2.4.3
+	github.com/sigstore/cosign/v3 v3.0.2
 	github.com/sigstore/sigstore v1.8.15
 	github.com/stretchr/testify v1.10.0
 	github.com/validator-labs/validator v0.1.16