labeler tweaks (#2617)

.github/workflows/pull-request-target.yml

@@ -0,0 +1,15 @@
+name: "Pull Request Labeler"
+on:
+- pull_request_target
+# Do not execute arbitary code on this workflow. 
+# See warnings at https://docs.github.com/en/actions/reference/workflows-and-actions/events-that-trigger-workflows#pull_request_target
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+    - id: label-the-PR
+      uses: actions/labeler@v5