chore(deps): Bump github.com/sigstore/sigstore from 1.8.6 to 1.8.7

Bumps [github.com/sigstore/sigstore](https://github.com/sigstore/sigstore) from 1.8.6 to 1.8.7.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.8.6...v1.8.7)

---
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

@@ -29,7 +29,7 @@ require (
 	github.com/ryanuber/go-glob v1.0.0
 	github.com/sigstore/cosign/v2 v2.2.4
 	github.com/sigstore/rekor v1.3.6
-	github.com/sigstore/sigstore v1.8.6
+	github.com/sigstore/sigstore v1.8.7
 	github.com/stretchr/testify v1.9.0
 	github.com/theupdateframework/go-tuf v0.7.0
 	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399

go.sum

@@ -256,8 +256,8 @@ github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
 github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
 github.com/containerd/stargz-snapshotter/estargz v0.14.3 h1:OqlDCK3ZVUO6C3B/5FSkDwbkEETK84kQgEeFwDC+62k=
 github.com/containerd/stargz-snapshotter/estargz v0.14.3/go.mod h1:KY//uOCIkSuNAHhJogcZtrNHdKrA99/FCCRjE3HD36o=
-github.com/coreos/go-oidc/v3 v3.10.0 h1:tDnXHnLyiTVyT/2zLDGj09pFPkhND8Gl8lnTRhoEaJU=
-github.com/coreos/go-oidc/v3 v3.10.0/go.mod h1:5j11xcw0D3+SGxn6Z/WFADsgcWVMyNAlSQupk0KK3ac=
+github.com/coreos/go-oidc/v3 v3.11.0 h1:Ia3MxdwpSw702YW0xgfmP1GVCMA9aEFWu12XUZ3/OtI=
+github.com/coreos/go-oidc/v3 v3.11.0/go.mod h1:gE3LgjOgFoHi9a4ce4/tJczr0Ai2/BoDhf0r5lltWI0=
 github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/cyberphone/json-canonicalization v0.0.0-20231011164504-785e29786b46 h1:2Dx4IHfC1yHWI12AxQDJM1QbRCDfk6M+blLzlZCXdrc=
 github.com/cyberphone/json-canonicalization v0.0.0-20231011164504-785e29786b46/go.mod h1:uzvlm1mxhHkdfqitSA92i7Se+S9ksOn3a3qmv/kyOCw=
@@ -743,8 +743,8 @@ github.com/sigstore/rekor v1.3.6 h1:QvpMMJVWAp69a3CHzdrLelqEqpTM3ByQRt5B5Kspbi8=
 github.com/sigstore/rekor v1.3.6/go.mod h1:JDTSNNMdQ/PxdsS49DJkJ+pRJCO/83nbR5p3aZQteXc=
 github.com/sigstore/scaffolding v0.7.4 h1:z6kJ4iHV6VZArCiOQKnKnUiMzBIjpsVx7eeOqignATY=
 github.com/sigstore/scaffolding v0.7.4/go.mod h1:d9eDqBhnnUpc6/M3GKoyyHusJ90790wIUWIagZR6Tws=
-github.com/sigstore/sigstore v1.8.6 h1:g066b/Nw5r5oxhNv4XqJUUzVcyf1b07itUueiQe7rZM=
-github.com/sigstore/sigstore v1.8.6/go.mod h1:UOBrJd9JBQ81DrkpGljzsIFXEtfC30raHvLWFWG857U=
+github.com/sigstore/sigstore v1.8.7 h1:L7/zKauHTg0d0Hukx7qlR4nifh6T6O6UIt9JBwAmTIg=
+github.com/sigstore/sigstore v1.8.7/go.mod h1:MPiQ/NIV034Fc3Kk2IX9/XmBQdK60wfmpvgK9Z1UjRA=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.6 h1:uVcT1JT4lLkmBQII25PvgP/nyvi4HvTMNXzoHqQqEHE=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.6/go.mod h1:VJ/745ojKNQKbZ1ykO5Vebtnq9vGt8zcgKemQIibBIE=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.6 h1:TBbzoiUDVYpWw4uXBp3bV0uyA2SJp9uGsOATYnHHbgw=