Bump github.com/hashicorp/hcl/v2 from 2.7.1 to 2.8.1 (#62)

Bumps [github.com/hashicorp/hcl/v2](https://github.com/hashicorp/hcl) from 2.7.1 to 2.8.1.
- [Release notes](https://github.com/hashicorp/hcl/releases)
- [Changelog](https://github.com/hashicorp/hcl/blob/v2.8.1/CHANGELOG.md)
- [Commits](hashicorp/hcl@v2.7.1...v2.8.1)

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

go.mod

@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/google/go-cmp v0.5.4
-	github.com/hashicorp/hcl/v2 v2.7.1
+	github.com/hashicorp/hcl/v2 v2.8.1
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.4.0
 	github.com/terraform-linters/tflint-plugin-sdk v0.6.0
 )

go.sum

@@ -172,6 +172,8 @@ github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
 github.com/hashicorp/hcl/v2 v2.3.0/go.mod h1:d+FwDBbOLvpAM3Z6J7gPj/VoAGkNe/gm352ZhjJ/Zv8=
 github.com/hashicorp/hcl/v2 v2.7.1 h1:eZWfKEO93WyE4OnZSD5LVy70YHDV/mmQ49gpKDLpDVM=
 github.com/hashicorp/hcl/v2 v2.7.1/go.mod h1:bQTN5mpo+jewjJgh8jr0JUguIi7qPHUF6yIfAEN3jqY=
+github.com/hashicorp/hcl/v2 v2.8.1 h1:FJ60CIYaMyJOKzPndhMyjiz353Fd+2jr6PodF5Xzb08=
+github.com/hashicorp/hcl/v2 v2.8.1/go.mod h1:bQTN5mpo+jewjJgh8jr0JUguIi7qPHUF6yIfAEN3jqY=
 github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
 github.com/hashicorp/terraform-exec v0.12.0/go.mod h1:SGhto91bVRlgXQWcJ5znSz+29UZIa8kpBbkGwQ+g9E8=
 github.com/hashicorp/terraform-json v0.8.0/go.mod h1:3defM4kkMfttwiE7VakJDwCd4R+umhSQnvJwORXbprE=