missed one

Author: sblack4

.github/workflows/tflint.yaml

@@ -16,7 +16,7 @@ jobs:
       - name: setup Terraform
         uses: hashicorp/setup-terraform@v1
         with:
-          terraform_version: ~0.12.29
+          terraform_version: ~0.13.4
       - name: Terraform init
         run: terraform init --backend=false
       - name: tflint