chore(deps): bump github.com/sigstore/sigstore/pkg/signature/kms/gcp

Bumps [github.com/sigstore/sigstore/pkg/signature/kms/gcp](https://github.com/sigstore/sigstore) from 1.7.5 to 1.7.6.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.7.5...v1.7.6)

---
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>

go.mod

@@ -35,7 +35,7 @@ require (
 	github.com/sigstore/sigstore v1.7.5
 	github.com/sigstore/sigstore/pkg/signature/kms/aws v1.7.5
 	github.com/sigstore/sigstore/pkg/signature/kms/azure v1.7.5
-	github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.7.5
+	github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.7.6
 	github.com/sigstore/sigstore/pkg/signature/kms/hashivault v1.7.5
 	github.com/sigstore/timestamp-authority v1.2.0
 	github.com/spf13/cobra v1.8.0

go.sum

@@ -711,8 +711,8 @@ github.com/sigstore/sigstore/pkg/signature/kms/aws v1.7.5 h1:ilufPp36exfpivctI3E
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.7.5/go.mod h1:121n8nBnuXbcI6K0hIBo/0EMYiyXqGVzbIYd0rV0ZWw=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.7.5 h1:gLdNJJo+xMf7+IeFRlyA/Pjavndo9rivmf5ioYeuPmM=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.7.5/go.mod h1:9nJQA5YgWsXrwjrVoVaO8JfTI/TpPF+oAkpkNKZu6lo=
-github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.7.5 h1:Ku3MD55VXR7+uezCS4LOY0+y2EZFlGCGFyzl+ZSoPyo=
-github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.7.5/go.mod h1:FsNzxmFGATZS5ynkJLLXm9g2zHD0Xw23iJs7lM/asPo=
+github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.7.6 h1:aMVT9XXFQEnBtJ6szzanyAdKT5gFK4emN+jLSlFlOso=
+github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.7.6/go.mod h1:Hwhlx8JSZJF1R27JlwW/Bl2h40reG3MfKANREtBI0L8=
 github.com/sigstore/sigstore/pkg/signature/kms/hashivault v1.7.5 h1:yWNBuL52Je3ukUGry1qwg00ujJF2UFWShzXFIAtmxZU=
 github.com/sigstore/sigstore/pkg/signature/kms/hashivault v1.7.5/go.mod h1:EI9vDWVGG8fQU9aFMY7Bd204xJiqmXcDMSkFifCf16Q=
 github.com/sigstore/timestamp-authority v1.2.0 h1:Ffk10QsHxu6aLwySQ7WuaoWkD63QkmcKtozlEFot/VI=