ci: use hashicorp/setup-terraform in resource-counts workflow

Author: jar-b

.github/workflows/resource-counts.yml

@@ -19,6 +19,10 @@ jobs:
           installation_retrieval_payload: ${{ secrets.INSTALLATION_ID }}
           private_key: ${{secrets.APP_PEM }}
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
+      - uses: hashicorp/setup-terraform@b9cd54a3c349d3f38e8881555d616ced269862dd
+        with:
+          terraform_version: ${{ env.TERRAFORM_VERSION }}
+          terraform_wrapper: false
       - run: |
           touch main.tf
           cat << EOF > main.tf