build(deps): bump github.com/hashicorp/terraform-json (#421)

Bumps [github.com/hashicorp/terraform-json](https://github.com/hashicorp/terraform-json) from 0.17.1 to 0.18.0.
- [Release notes](https://github.com/hashicorp/terraform-json/releases)
- [Commits](hashicorp/terraform-json@v0.17.1...v0.18.0)

---
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

@@ -6,7 +6,7 @@ require (
 	github.com/google/go-cmp v0.6.0
 	github.com/hashicorp/go-version v1.6.0
 	github.com/hashicorp/hc-install v0.6.1
-	github.com/hashicorp/terraform-json v0.17.1
+	github.com/hashicorp/terraform-json v0.18.0
 	github.com/zclconf/go-cty v1.14.1
 	github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b
 )

go.sum

@@ -43,8 +43,8 @@ github.com/hashicorp/go-version v1.6.0 h1:feTTfFNnjP967rlCxM/I9g701jU+RN74YKx2mO
 github.com/hashicorp/go-version v1.6.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/hashicorp/hc-install v0.6.1 h1:IGxShH7AVhPaSuSJpKtVi/EFORNjO+OYVJJrAtGG2mY=
 github.com/hashicorp/hc-install v0.6.1/go.mod h1:0fW3jpg+wraYSnFDJ6Rlie3RvLf1bIqVIkzoon4KoVE=
-github.com/hashicorp/terraform-json v0.17.1 h1:eMfvh/uWggKmY7Pmb3T85u86E2EQg6EQHgyRwf3RkyA=
-github.com/hashicorp/terraform-json v0.17.1/go.mod h1:Huy6zt6euxaY9knPAFKjUITn8QxUFIe9VuSzb4zn/0o=
+github.com/hashicorp/terraform-json v0.18.0 h1:pCjgJEqqDESv4y0Tzdqfxr/edOIGkjs8keY42xfNBwU=
+github.com/hashicorp/terraform-json v0.18.0/go.mod h1:qdeBs11ovMzo5puhrRibdD6d2Dq6TyE/28JiU4tIQxk=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOlocH6Fxy8MmwDt+yVQYULKfN0RoTN8A=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
 github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=