Bump github.com/sigstore/sigstore from 1.8.0 to 1.8.1

Bumps [github.com/sigstore/sigstore](https://github.com/sigstore/sigstore) from 1.8.0 to 1.8.1.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.8.0...v1.8.1)

---
updated-dependencies:
- dependency-name: github.com/sigstore/sigstore
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/prometheus/client_model v0.5.0
 	github.com/prometheus/common v0.46.0
 	github.com/rs/cors v1.10.1
-	github.com/sigstore/sigstore v1.8.0
+	github.com/sigstore/sigstore v1.8.1
 	github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.0
 	github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.1
 	github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.1

go.sum

@@ -310,8 +310,8 @@ github.com/secure-systems-lab/go-securesystemslib v0.8.0 h1:mr5An6X45Kb2nddcFlbm
 github.com/secure-systems-lab/go-securesystemslib v0.8.0/go.mod h1:UH2VZVuJfCYR8WgMlCU1uFsOUU+KeyrTWcSS73NBOzU=
 github.com/segmentio/ksuid v1.0.4 h1:sBo2BdShXjmcugAMwjugoGUdUV0pcxY5mW4xKRn3v4c=
 github.com/segmentio/ksuid v1.0.4/go.mod h1:/XUiZBD3kVx5SmUOl55voK5yeAbBNNIed+2O73XgrPE=
-github.com/sigstore/sigstore v1.8.0 h1:sSRWXv1JiDsK4T2wNWVYcvKCgxcSrhQ/QUJxsfCO4OM=
-github.com/sigstore/sigstore v1.8.0/go.mod h1:l12B1gFlLIpBIVeqk/q1Lb+6YSOGNuN3xLExIjYH+qc=
+github.com/sigstore/sigstore v1.8.1 h1:mAVposMb14oplk2h/bayPmIVdzbq2IhCgy4g6R0ZSjo=
+github.com/sigstore/sigstore v1.8.1/go.mod h1:02SL1158BSj15bZyOFz7m+/nJzLZfFd9A8ab3Kz7w/E=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.0 h1:nLaaOX85YjBKQOQHWY2UlDkbx+je8ozTEM+t1ySAb78=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.0/go.mod h1:fLxrKqPP9lIz/B3UBD4ZK6j6984eX2czu/0zxm99fkE=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.1 h1:DvRWG99QGWZC5mp42SEde2Xke/Q384Idnj2da7yB+Mk=