chore(ci): Ensure PR titles are in semantic format (#7346)

.github/workflows/lint_pr.yml

@@ -0,0 +1,23 @@
+# ref: https://github.com/amannn/action-semantic-pull-request
+# ensure PR title is in semantic format
+
+name: "Lint PR"
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+
+permissions:
+  pull-requests: read
+
+jobs:
+  main:
+    name: Validate PR title
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}