chore(deps): Bump github.com/sigstore/sigstore from 1.7.6 to 1.8.0

Bumps [github.com/sigstore/sigstore](https://github.com/sigstore/sigstore) from 1.7.6 to 1.8.0.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.7.6...v1.8.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -31,7 +31,7 @@ require (
 	github.com/ryanuber/go-glob v1.0.0
 	github.com/sigstore/cosign/v2 v2.2.2
 	github.com/sigstore/rekor v1.3.4
-	github.com/sigstore/sigstore v1.7.6
+	github.com/sigstore/sigstore v1.8.0
 	github.com/stretchr/testify v1.8.4
 	github.com/theupdateframework/go-tuf v0.7.0
 	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399
@@ -224,7 +224,7 @@ require (
 	github.com/sagikazarmark/locafero v0.4.0 // indirect
 	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
 	github.com/sassoftware/relic v7.2.1+incompatible // indirect
-	github.com/secure-systems-lab/go-securesystemslib v0.7.0 // indirect
+	github.com/secure-systems-lab/go-securesystemslib v0.8.0 // indirect
 	github.com/shibumi/go-pathspec v1.3.0 // indirect
 	github.com/sigstore/timestamp-authority v1.2.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect

go.sum

@@ -734,16 +734,16 @@ github.com/sassoftware/relic v7.2.1+incompatible h1:Pwyh1F3I0r4clFJXkSI8bOyJINGq
 github.com/sassoftware/relic v7.2.1+incompatible/go.mod h1:CWfAxv73/iLZ17rbyhIEq3K9hs5w6FpNMdUT//qR+zk=
 github.com/sassoftware/relic/v7 v7.6.1 h1:O5s8ewCgq5QYNpv45dK4u6IpBmDM9RIcsbf/G1uXepQ=
 github.com/sassoftware/relic/v7 v7.6.1/go.mod h1:NxwtWxWxlUa9as2qZi635Ye6bBT/tGnMALLq7dSfOOU=
-github.com/secure-systems-lab/go-securesystemslib v0.7.0 h1:OwvJ5jQf9LnIAS83waAjPbcMsODrTQUpJ02eNLUoxBg=
-github.com/secure-systems-lab/go-securesystemslib v0.7.0/go.mod h1:/2gYnlnHVQ6xeGtfIqFy7Do03K4cdCY0A/GlJLDKLHI=
+github.com/secure-systems-lab/go-securesystemslib v0.8.0 h1:mr5An6X45Kb2nddcFlbmfHkLguCE9laoZCUzEEpIZXA=
+github.com/secure-systems-lab/go-securesystemslib v0.8.0/go.mod h1:UH2VZVuJfCYR8WgMlCU1uFsOUU+KeyrTWcSS73NBOzU=
 github.com/shibumi/go-pathspec v1.3.0 h1:QUyMZhFo0Md5B8zV8x2tesohbb5kfbpTi9rBnKh5dkI=
 github.com/shibumi/go-pathspec v1.3.0/go.mod h1:Xutfslp817l2I1cZvgcfeMQJG5QnU2lh5tVaaMCl3jE=
 github.com/sigstore/cosign/v2 v2.2.2 h1:V1uE1/QnKGfj77vuqlEGBg6O2ZJqOrWkLwjTC21Vxw0=
 github.com/sigstore/cosign/v2 v2.2.2/go.mod h1:bNmX0qyby7sgcqY9oY/jy5m+XJ3N3LtpOsNfO+A1CGo=
 github.com/sigstore/rekor v1.3.4 h1:RGIia1iOZU7fOiiP2UY/WFYhhp50S5aUm7YrM8aiA6E=
 github.com/sigstore/rekor v1.3.4/go.mod h1:1GubPVO2yO+K0m0wt/3SHFqnilr/hWbsjSOe7Vzxrlg=
-github.com/sigstore/sigstore v1.7.6 h1:zB0woXx+3Bp7dk7AjklHF1VhXBdCs84VXkZbp0IHLv8=
-github.com/sigstore/sigstore v1.7.6/go.mod h1:FJE+NpEZIs4QKqZl4B2RtaVLVDcDtocAwTiNlexeBkY=
+github.com/sigstore/sigstore v1.8.0 h1:sSRWXv1JiDsK4T2wNWVYcvKCgxcSrhQ/QUJxsfCO4OM=
+github.com/sigstore/sigstore v1.8.0/go.mod h1:l12B1gFlLIpBIVeqk/q1Lb+6YSOGNuN3xLExIjYH+qc=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.7.6 h1:WzZExOcFanrFfCi7SUgkBtJicWnSNziBD9nSSQIrqhc=
 github.com/sigstore/sigstore/pkg/signature/kms/aws v1.7.6/go.mod h1:3zOHOLHnCE6EXyVH+6Z/lC9O1RDsbmR045NQ1DogiHw=
 github.com/sigstore/sigstore/pkg/signature/kms/azure v1.7.6 h1:wsPt9kNXF1ZZyae2wO35NLsK+cjWqPGpuPaDdXzRe0g=