chore: bump github.com/in-toto/go-witness (#134)

Bumps [github.com/in-toto/go-witness](https://github.com/in-toto/go-witness) from 0.1.18-0.20231214175634-5b5647c42b3c to 0.2.0.
- [Release notes](https://github.com/in-toto/go-witness/releases)
- [Changelog](https://github.com/in-toto/go-witness/blob/main/.goreleaser.yaml)
- [Commits](https://github.com/in-toto/go-witness/commits/v0.2.0)

---
updated-dependencies:
- dependency-name: github.com/in-toto/go-witness
  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

@@ -14,7 +14,7 @@ require (
 	github.com/gorilla/handlers v1.5.2
 	github.com/gorilla/mux v1.8.1
 	github.com/hashicorp/go-multierror v1.1.1
-	github.com/in-toto/go-witness v0.1.18-0.20231214175634-5b5647c42b3c
+	github.com/in-toto/go-witness v0.2.0
 	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/lib/pq v1.10.9
 	github.com/minio/minio-go v6.0.14+incompatible

go.sum

@@ -99,8 +99,8 @@ github.com/hashicorp/golang-lru/v2 v2.0.3 h1:kmRrRLlInXvng0SmLxmQpQkpbYAvcXm7NPD
 github.com/hashicorp/golang-lru/v2 v2.0.3/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/hashicorp/hcl/v2 v2.13.0 h1:0Apadu1w6M11dyGFxWnmhhcMjkbAiKCv7G1r/2QgCNc=
 github.com/hashicorp/hcl/v2 v2.13.0/go.mod h1:e4z5nxYlWNPdDSNYX+ph14EvWYMFm3eP0zIUqPc2jr0=
-github.com/in-toto/go-witness v0.1.18-0.20231214175634-5b5647c42b3c h1:BrnFYv8TI/uFBkB+WkY5npqveeNFG/fVf1k4Hd9LMl8=
-github.com/in-toto/go-witness v0.1.18-0.20231214175634-5b5647c42b3c/go.mod h1:uiBFKD3cykEKWZzzc5Vshy3YeKAwlafIm9/7NGx+Xck=
+github.com/in-toto/go-witness v0.2.0 h1:lxp3+Kc4Der2C1jV9ZePjSCEHUr2NsB4sImXI5sZHu4=
+github.com/in-toto/go-witness v0.2.0/go.mod h1:Jr6ZlYoVfTS3hjUSmJ10J8qiHjpF1cfSE4NLAIJpbLw=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/kelseyhightower/envconfig v1.4.0 h1:Im6hONhd3pLkfDFsbRgu68RDNkGF1r3dvMUtDTo2cv8=