Bump github.com/hashicorp/terraform-plugin-sdk/v2 from 2.5.0 to 2.6.1 (#91)

Bumps [github.com/hashicorp/terraform-plugin-sdk/v2](https://github.com/hashicorp/terraform-plugin-sdk) from 2.5.0 to 2.6.1.
- [Release notes](https://github.com/hashicorp/terraform-plugin-sdk/releases)
- [Changelog](https://github.com/hashicorp/terraform-plugin-sdk/blob/main/CHANGELOG.md)
- [Commits](hashicorp/terraform-plugin-sdk@v2.5.0...v2.6.1)

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

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

Author: dependabot[bot]

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/dave/dst v0.26.2
 	github.com/google/go-cmp v0.5.5
 	github.com/hashicorp/hcl/v2 v2.10.0
-	github.com/hashicorp/terraform-plugin-sdk/v2 v2.5.0
+	github.com/hashicorp/terraform-plugin-sdk/v2 v2.6.1
 	github.com/onsi/ginkgo v1.15.2 // indirect
 	github.com/onsi/gomega v1.11.0 // indirect
 	github.com/serenize/snaker v0.0.0-20201027110005-a7ad2135616e