Pass PR title to commitlint via environment variable (#9414)

Author: AdnaneKhan

.github/workflows/conventional-label.yml

@@ -7,6 +7,8 @@ name: commit lint & label
 jobs:
   lint:
     runs-on: ubuntu-latest
+    env:
+      PR_TITLE: ${{ github.event.pull_request.title }}
     permissions:
       pull-requests: read
       contents: read
@@ -23,7 +25,7 @@ jobs:
         run: npm ci
       - name: Check PR title
         id: check-pr-title
-        run: echo "${{ github.event.pull_request.title }}" | npx commitlint --verbose
+        run: echo "$PR_TITLE" | npx commitlint --verbose
 
   label:
     runs-on: ubuntu-latest