Bump hashicorp/setup-terraform from v1 to v1.2.1 (hazelcast#59)

Bumps [hashicorp/setup-terraform](https://github.com/hashicorp/setup-terraform) from v1 to v1.2.1.
- [Release notes](https://github.com/hashicorp/setup-terraform/releases)
- [Changelog](https://github.com/hashicorp/setup-terraform/blob/master/CHANGELOG.md)
- [Commits](hashicorp/setup-terraform@v1...d224448)

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

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

.github/workflows/terraform-integration-tests.yml

@@ -64,7 +64,7 @@ jobs:
 
       #BUILD TERRAFORM
       - name : Set-up Terraform
-        uses: hashicorp/setup-terraform@v1
+        uses: hashicorp/setup-terraform@v1.2.1
         with:
           terraform_version: 0.13.0