chore(deps): Bump github.com/sigstore/sigstore from 1.8.7 to 1.8.8

Bumps [github.com/sigstore/sigstore](https://github.com/sigstore/sigstore) from 1.8.7 to 1.8.8.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.8.7...v1.8.8)

---
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 v1.8.7
+	github.com/sigstore/sigstore v1.8.8
 	github.com/stretchr/testify v1.9.0
 	github.com/theupdateframework/go-tuf v0.7.0
 	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399
@@ -261,7 +261,7 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/exp v0.0.0-20240112132812-db7319d0e0e3 // indirect
 	golang.org/x/mod v0.17.0 // indirect
-	golang.org/x/oauth2 v0.21.0 // indirect
+	golang.org/x/oauth2 v0.22.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/term v0.22.0 // indirect
 	golang.org/x/text v0.16.0 // indirect

go.sum

@@ -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 v1.8.7 h1:L7/zKauHTg0d0Hukx7qlR4nifh6T6O6UIt9JBwAmTIg=
-github.com/sigstore/sigstore v1.8.7/go.mod h1:MPiQ/NIV034Fc3Kk2IX9/XmBQdK60wfmpvgK9Z1UjRA=
+github.com/sigstore/sigstore v1.8.8 h1:B6ZQPBKK7Z7tO3bjLNnlCMG+H66tO4E/+qAphX8T/hg=
+github.com/sigstore/sigstore v1.8.8/go.mod h1:GW0GgJSCTBJY3fUOuGDHeFWcD++c4G8Y9K015pwcpDI=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.7 h1:SoahswHQm2JhO8h3KTAeX8IZeE7mSR2Lc53ay5choes=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.7/go.mod h1:TOVOPOqldrrz4dP7x4/0DFQTs9QSXZUoHu21+JHmixA=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.8.7 h1:jcdKxc5bvwfL7+ZbeCszaN/qsBd6180fGAHxeX5Ckm0=
@@ -994,8 +994,8 @@ golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4Iltr
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
-golang.org/x/oauth2 v0.21.0 h1:tsimM75w1tF/uws5rbeHzIWxEqElMehnc+iW793zsZs=
-golang.org/x/oauth2 v0.21.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.22.0 h1:BzDx2FehcG7jJwgWLELCdmLuxk2i+x9UDpSiss2u0ZA=
+golang.org/x/oauth2 v0.22.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=