Bump github.com/in-toto/attestation from 1.0.2 to 1.1.0 (#36)

Bumps [github.com/in-toto/attestation](https://github.com/in-toto/attestation) from 1.0.2 to 1.1.0.
- [Release notes](https://github.com/in-toto/attestation/releases)
- [Commits](in-toto/attestation@v1.0.2...v1.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/google/cel-go v0.20.1
-	github.com/in-toto/attestation v1.0.2
+	github.com/in-toto/attestation v1.1.0
 	github.com/in-toto/in-toto-golang v0.9.0
 	github.com/secure-systems-lab/go-securesystemslib v0.8.0
 	github.com/sirupsen/logrus v1.9.3

go.sum

@@ -8,8 +8,8 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/google/cel-go v0.20.1 h1:nDx9r8S3L4pE61eDdt8igGj8rf5kjYR3ILxWIpWNi84=
 github.com/google/cel-go v0.20.1/go.mod h1:kWcIzTsPX0zmQ+H3TirHstLLf9ep5QTsZBN9u4dOYLg=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/in-toto/attestation v1.0.2 h1:ICqV41bfaDC3ixVUzAtFxFu+Dy56EPcjiIrJQe+4LVM=
-github.com/in-toto/attestation v1.0.2/go.mod h1:3uRayZSKuCHDDZOxLm5UfYulqqd1L1NdzYvxX/jyZEM=
+github.com/in-toto/attestation v1.1.0 h1:oRWzfmZPDSctChD0VaQV7MJrywKOzyNrtpENQFq//2Q=
+github.com/in-toto/attestation v1.1.0/go.mod h1:DB59ytd3z7cIHgXxwpSX2SABrU6WJUKg/grpdgHVgVs=
 github.com/in-toto/in-toto-golang v0.9.0 h1:tHny7ac4KgtsfrG6ybU8gVOZux2H8jN05AXJ9EBM1XU=
 github.com/in-toto/in-toto-golang v0.9.0/go.mod h1:xsBVrVsHNsB61++S6Dy2vWosKhuA3lUTQd+eF9HdeMo=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=