chore(deps): update terraform-docs/gh-actions action to v1.4.0

Author: renovate[bot]

sync-root/.github/workflows/terraform-validation.yaml

@@ -117,7 +117,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Render terraform docs inside the README.md and push changes back to PR branch
-        uses: terraform-docs/gh-actions@v1.3.0
+        uses: terraform-docs/gh-actions@v1.4.0
         with:
           args: --sort-by required
           git-commit-message: "docs(readme): update module usage"
@@ -138,7 +138,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Render terraform docs inside the README.md and push changes back to PR branch
-        uses: terraform-docs/gh-actions@v1.3.0
+        uses: terraform-docs/gh-actions@v1.4.0
         with:
           args: --sort-by required
           git-commit-message: "docs(readme): update module usage"