Bump github.com/sigstore/sigstore in the gomod group across 1 directory

Bumps the gomod group with 1 update in the / directory: [github.com/sigstore/sigstore](https://github.com/sigstore/sigstore).


Updates `github.com/sigstore/sigstore` from 1.8.10 to 1.8.11
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.8.10...v1.8.11)

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

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

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/sigstore/fulcio v1.6.5
 	github.com/sigstore/protobuf-specs v0.3.2
 	github.com/sigstore/rekor v1.3.7
-	github.com/sigstore/sigstore v1.8.10
+	github.com/sigstore/sigstore v1.8.11
 	github.com/spf13/cobra v1.8.1
 	github.com/spf13/pflag v1.0.5
 	golang.org/x/crypto v0.31.0

go.sum

@@ -587,8 +587,8 @@ github.com/sigstore/protobuf-specs v0.3.2 h1:nCVARCN+fHjlNCk3ThNXwrZRqIommIeNKWw
 github.com/sigstore/protobuf-specs v0.3.2/go.mod h1:RZ0uOdJR4OB3tLQeAyWoJFbNCBFrPQdcokntde4zRBA=
 github.com/sigstore/rekor v1.3.7 h1:Z5UW5TmqbTZnyOFkMRfi32q/CWcxK6VuzIkx+33mbq8=
 github.com/sigstore/rekor v1.3.7/go.mod h1:TihqJscZ6L6398x68EHY82t0AOnGYfrQ0siXe3WgbR4=
-github.com/sigstore/sigstore v1.8.10 h1:r4t+TYzJlG9JdFxMy+um9GZhZ2N1hBTyTex0AHEZxFs=
-github.com/sigstore/sigstore v1.8.10/go.mod h1:BekjqxS5ZtHNJC4u3Q3Stvfx2eyisbW/lUZzmPU2u4A=
+github.com/sigstore/sigstore v1.8.11 h1:tEqeQqbT+awtM87ec9KEeSUxT/AFvJNawneYJyAkFrQ=
+github.com/sigstore/sigstore v1.8.11/go.mod h1:fdrFQosxCQ4wTL5H1NrZcQkqQ72AQbPjtpcL2QOGKV0=
 github.com/sigstore/sigstore-go v0.6.1 h1:tGkkv1oDIER+QYU5MrjqlttQOVDWfSkmYwMqkJhB/cg=
 github.com/sigstore/sigstore-go v0.6.1/go.mod h1:Xe5GHmUeACRFbomUWzVkf/xYCn8xVifb9DgqJrV2dIw=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.10 h1:e5GfVngPjGap/N3ODefayt7vKIPS1/v3hWLZ9+4MrN4=