feat(deps): bump github.com/sigstore/cosign/v2 from 2.3.0 to 2.4.0

Bumps [github.com/sigstore/cosign/v2](https://github.com/sigstore/cosign) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/sigstore/cosign/releases)
- [Changelog](https://github.com/sigstore/cosign/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sigstore/cosign/compare/v2.3.0...v2.4.0)

---
updated-dependencies:
- dependency-name: github.com/sigstore/cosign/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/opencontainers/image-spec v1.1.0
 	github.com/package-url/packageurl-go v0.1.3
 	github.com/secure-systems-lab/go-securesystemslib v0.8.0
-	github.com/sigstore/cosign/v2 v2.3.0
+	github.com/sigstore/cosign/v2 v2.4.0
 	github.com/sigstore/rekor v1.3.6
 	github.com/sigstore/sigstore/pkg/signature/kms/aws v1.8.8
 	github.com/sigstore/sigstore/pkg/signature/kms/gcp v1.8.8
@@ -148,7 +148,8 @@ require (
 	github.com/shibumi/go-pathspec v1.3.0 // indirect
 	github.com/shirou/gopsutil/v3 v3.24.4 // indirect
 	github.com/shoenig/go-m1cpu v0.1.6 // indirect
-	github.com/sigstore/sigstore v1.8.7 // indirect
+	github.com/sigstore/protobuf-specs v0.3.2 // indirect
+	github.com/sigstore/sigstore v1.8.8 // indirect
 	github.com/sigstore/timestamp-authority v1.2.2 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/sourcegraph/conc v0.3.0 // indirect
@@ -183,10 +184,10 @@ require (
 	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/crypto v0.25.0 // indirect
 	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
-	golang.org/x/mod v0.17.0 // indirect
+	golang.org/x/mod v0.19.0 // indirect
 	golang.org/x/net v0.27.0 // indirect
 	golang.org/x/oauth2 v0.22.0 // indirect
-	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.22.0 // indirect
 	golang.org/x/term v0.22.0 // indirect
 	golang.org/x/text v0.16.0 // indirect