Merge pull request #248 from canonical/renovate/auto-github-actions

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

Author: canonical-iam

.github/workflows/documentation.yaml

@@ -11,7 +11,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Render terraform docs and push changes back to PR branch
-        uses: terraform-docs/gh-actions@aeae0038ed47a547e0c0fca5c059d3335f48fb25 # v1.3.0
+        uses: terraform-docs/gh-actions@7f8a667921aee9dd89af0f3c6dfa6160d7ebd8bb # v1.4.0
         with:
           config-file: terraform/.terraform-docs.yaml
           working-dir: terraform