Bump terraform-docs/gh-actions

Bumps [terraform-docs/gh-actions](https://github.com/terraform-docs/gh-actions) from 72ed18e5751c95dc36107dff832598081ff56eb9 to f9a33581072a78f38e2f0bb728f56c8b674e50fc.
- [Release notes](https://github.com/terraform-docs/gh-actions/releases)
- [Commits](terraform-docs/gh-actions@72ed18e...f9a3358)

---
updated-dependencies:
- dependency-name: terraform-docs/gh-actions
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/terraform.yml

@@ -29,7 +29,7 @@ jobs:
       with:
         ref: ${{ github.event.pull_request.head.ref }}
     - name: Render terraform docs and push changes back to PR branch
-      uses: terraform-docs/gh-actions@72ed18e5751c95dc36107dff832598081ff56eb9
+      uses: terraform-docs/gh-actions@f9a33581072a78f38e2f0bb728f56c8b674e50fc
       with:
         working-dir: .
         output-file: README.md