Update terraform-docs/gh-actions action to v1.4.0

Author: renovate[bot]

.github/workflows/terraform-release.yaml

@@ -70,7 +70,7 @@ jobs:
           ref: 'main'
 
       - name: 📄 Render terraform docs inside the README.md and push changes back to PR branch
-        uses: terraform-docs/gh-actions@v1.2.0
+        uses: terraform-docs/gh-actions@v1.4.0
         with:
           working-dir: .
           output-file: README.md