Bump github.com/sigstore/sigstore/pkg/signature/kms/gcp (#688)

Bumps [github.com/sigstore/sigstore/pkg/signature/kms/gcp](https://github.com/sigstore/sigstore) from 1.8.2 to 1.8.3.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.8.2...v1.8.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/sigstore/sigstore v1.8.2
 	github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.3
 	github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.3
-	github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.2
+	github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.3
 	github.com/sigstore/sigstore/pkg/signature/kms/hashivault v1.8.2
 	github.com/spf13/cobra v1.8.0
 	github.com/spf13/pflag v1.0.5

go.sum

@@ -297,8 +297,8 @@ github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.3 h1:LTfPadUAo+PDRUbbdqb
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.3/go.mod h1:QV/Lxlxm0POyhfyBtIbTWxNeF18clMlkkyL9mu45y18=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.3 h1:xgbPRCr2npmmsuVVteJqi/ERw9+I13Wou7kq0Yk4D8g=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.3/go.mod h1:G4+I83FILPX6MtnoaUdmv/bRGEVtR3JdLeJa/kXdk/0=
-github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.2 h1:aX6hLH5v3JdOQJJ6+uCMmeDjcwyfQMLmXKJVl6HtzAg=
-github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.2/go.mod h1:OEFPub6XKsX6Fl/PpeIpQTsukG3I0CFWb9saHINV72U=
+github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.3 h1:vDl2fqPT0h3D/k6NZPlqnKFd1tz3335wm39qjvpZNJc=
+github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.3/go.mod h1:9uOJXbXEXj+M6QjMKH5PaL5WDMu43rHfbIMgXzA8eKI=
 github.com/sigstore/sigstore/pkg/signature/kms/hashivault v1.8.2 h1:hRC8sGPQtnTcoOqWbCNAvLpW1pHL4CQl7FT55IrEof8=
 github.com/sigstore/sigstore/pkg/signature/kms/hashivault v1.8.2/go.mod h1:frWJBbYRRHnbLE9h1fH349Mde84NZh6hDrnKqhPgMNU=
 github.com/smallstep/assert v0.0.0-20200723003110-82e2b9b3b262 h1:unQFBIznI+VYD1/1fApl1A+9VcBk+9dcqGfnePY87LY=