Update terraform-docs/gh-actions action to v1

Author: renovate[bot]

.github/workflows/main.yml

@@ -54,7 +54,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Generate Terraform docs
-        uses: terraform-docs/gh-actions@v0.11.0
+        uses: terraform-docs/gh-actions@v1.1.0
         with:
           working-dir: .
           config-file: .terraform-docs.yml