Update hashicorp/setup-terraform action to v3

Author: renovate[bot]

.github/workflows/terraform.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
     # Important: This sets up your GITHUB_WORKSPACE environment variable
     - uses: actions/checkout@v3
-    - uses: hashicorp/setup-terraform@v2
+    - uses: hashicorp/setup-terraform@v3
 
     - name: fmt
       run: terraform fmt -recursive -check