chore(deps): bump github.com/in-toto/attestation from 1.1.2 to 1.2.0

Bumps [github.com/in-toto/attestation](https://github.com/in-toto/attestation) from 1.1.2 to 1.2.0.
- [Release notes](https://github.com/in-toto/attestation/releases)
- [Commits](in-toto/attestation@v1.1.2...v1.2.0)

---
updated-dependencies:
- dependency-name: github.com/in-toto/attestation
  dependency-version: 1.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

go.mod

@@ -32,7 +32,7 @@ require (
 	github.com/gorilla/websocket v1.5.3
 	github.com/hashicorp/go-version v1.8.0
 	github.com/hinshun/vt10x v0.0.0-20220119200601-820417d04eec
-	github.com/in-toto/attestation v1.1.2
+	github.com/in-toto/attestation v1.2.0
 	github.com/joho/godotenv v1.5.1
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/klauspost/compress v1.18.5

go.sum

@@ -340,8 +340,8 @@ github.com/howeyc/gopass v0.0.0-20210920133722-c8aef6fb66ef h1:A9HsByNhogrvm9cWb
 github.com/howeyc/gopass v0.0.0-20210920133722-c8aef6fb66ef/go.mod h1:lADxMC39cJJqL93Duh1xhAs4I2Zs8mKS89XWXFGp9cs=
 github.com/huandu/xstrings v1.5.0 h1:2ag3IFq9ZDANvthTwTiqSSZLjDc+BedvHPAp5tJy2TI=
 github.com/huandu/xstrings v1.5.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
-github.com/in-toto/attestation v1.1.2 h1:MBFn6lsMq6dptQZJBhalXTcWMb/aJy3V+GX3VYj/V1E=
-github.com/in-toto/attestation v1.1.2/go.mod h1:gYFddHMZj3DiQ0b62ltNi1Vj5rC879bTmBbrv9CRHpM=
+github.com/in-toto/attestation v1.2.0 h1:aPRUZ3azbqD7yEBD5fP3TD8Dszf+YHo284SOcpahjQk=
+github.com/in-toto/attestation v1.2.0/go.mod h1:r79G45gOmzPismgObLSL+rZTFxUgZLOQJI6LofTZgXk=
 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=