fix: update labeler to use email and username

Author: RobPasMue

.github/workflows/label.yml

@@ -94,4 +94,6 @@ jobs:
         steps:
         - uses: ansys/actions/doc-changelog@v8
           with:
-            token: ${{ secrets.PYANSYS_CI_BOT_TOKEN }}
+            token: ${{ secrets.PYANSYS_CI_BOT_TOKEN }}
+            bot-user: ${{ secrets.PYANSYS_CI_BOT_USERNAME }}
+            bot-email: ${{ secrets.PYANSYS_CI_BOT_EMAIL }}