chore(deps): bump github.com/secure-systems-lab/go-securesystemslib

Bumps [github.com/secure-systems-lab/go-securesystemslib](https://github.com/secure-systems-lab/go-securesystemslib) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/secure-systems-lab/go-securesystemslib/releases)
- [Commits](secure-systems-lab/go-securesystemslib@v0.5.0...v0.6.0)

---
updated-dependencies:
- dependency-name: github.com/secure-systems-lab/go-securesystemslib
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/mozillazg/docker-credential-acr-helper v0.3.0
 	github.com/open-policy-agent/opa v0.52.0
 	github.com/pkg/errors v0.9.1
-	github.com/secure-systems-lab/go-securesystemslib v0.5.0
+	github.com/secure-systems-lab/go-securesystemslib v0.6.0
 	github.com/sigstore/fulcio v1.3.1
 	github.com/sigstore/rekor v1.1.1
 	github.com/sigstore/sigstore v1.6.3

go.sum

@@ -781,8 +781,8 @@ github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIH
 github.com/sassoftware/relic v7.2.1+incompatible h1:Pwyh1F3I0r4clFJXkSI8bOyJINGqpgjJU3DYAZeI05A=
 github.com/sassoftware/relic v7.2.1+incompatible/go.mod h1:CWfAxv73/iLZ17rbyhIEq3K9hs5w6FpNMdUT//qR+zk=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
-github.com/secure-systems-lab/go-securesystemslib v0.5.0 h1:oTiNu0QnulMQgN/hLK124wJD/r2f9ZhIUuKIeBsCBT8=
-github.com/secure-systems-lab/go-securesystemslib v0.5.0/go.mod h1:uoCqUC0Ap7jrBSEanxT+SdACYJTVplRXWLkGMuDjXqk=
+github.com/secure-systems-lab/go-securesystemslib v0.6.0 h1:T65atpAVCJQK14UA57LMdZGpHi4QYSH/9FZyNGqMYIA=
+github.com/secure-systems-lab/go-securesystemslib v0.6.0/go.mod h1:8Mtpo9JKks/qhPG4HGZ2LGMvrPbzuxwfz/f/zLfEWkk=
 github.com/segmentio/ksuid v1.0.4 h1:sBo2BdShXjmcugAMwjugoGUdUV0pcxY5mW4xKRn3v4c=
 github.com/segmentio/ksuid v1.0.4/go.mod h1:/XUiZBD3kVx5SmUOl55voK5yeAbBNNIed+2O73XgrPE=
 github.com/shibumi/go-pathspec v1.3.0 h1:QUyMZhFo0Md5B8zV8x2tesohbb5kfbpTi9rBnKh5dkI=