Bump github.com/hashicorp/terraform-json from 0.20.0 to 0.21.0 (#325)

Bumps [github.com/hashicorp/terraform-json](https://github.com/hashicorp/terraform-json) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/hashicorp/terraform-json/releases)
- [Commits](hashicorp/terraform-json@v0.20.0...v0.21.0)

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

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

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/hashicorp/go-version v1.6.0
 	github.com/hashicorp/hc-install v0.6.2
 	github.com/hashicorp/terraform-exec v0.20.0
-	github.com/hashicorp/terraform-json v0.20.0
+	github.com/hashicorp/terraform-json v0.21.0
 	github.com/mattn/go-colorable v0.1.13
 	github.com/rogpeppe/go-internal v1.12.0
 	github.com/russross/blackfriday v1.6.0

go.sum

@@ -59,8 +59,8 @@ github.com/hashicorp/hc-install v0.6.2 h1:V1k+Vraqz4olgZ9UzKiAcbman9i9scg9GgSt/U
 github.com/hashicorp/hc-install v0.6.2/go.mod h1:2JBpd+NCFKiHiu/yYCGaPyPHhZLxXTpz8oreHa/a3Ps=
 github.com/hashicorp/terraform-exec v0.20.0 h1:DIZnPsqzPGuUnq6cH8jWcPunBfY+C+M8JyYF3vpnuEo=
 github.com/hashicorp/terraform-exec v0.20.0/go.mod h1:ckKGkJWbsNqFKV1itgMnE0hY9IYf1HoiekpuN0eWoDw=
-github.com/hashicorp/terraform-json v0.20.0 h1:cJcvn4gIOTi0SD7pIy+xiofV1zFA3hza+6K+fo52IX8=
-github.com/hashicorp/terraform-json v0.20.0/go.mod h1:qdeBs11ovMzo5puhrRibdD6d2Dq6TyE/28JiU4tIQxk=
+github.com/hashicorp/terraform-json v0.21.0 h1:9NQxbLNqPbEMze+S6+YluEdXgJmhQykRyRNd+zTI05U=
+github.com/hashicorp/terraform-json v0.21.0/go.mod h1:qdeBs11ovMzo5puhrRibdD6d2Dq6TyE/28JiU4tIQxk=
 github.com/huandu/xstrings v1.3.3 h1:/Gcsuc1x8JVbJ9/rlye4xZnVAbEkGauT8lbebqcQws4=
 github.com/huandu/xstrings v1.3.3/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=