use action's github token

Author: adrienpessu

.github/workflows/language-detection-and-assignment.yml

@@ -3,9 +3,8 @@ name: Language Detection and Assignment
 on:
   pull_request:
     branches: [main]
-
-env:
-  GH_TOKEN: ${{ secrets.GH_AP_TOKEN }}
+permissions: 
+  pull-requests: write 
 jobs:
   detect-and-assign:
     runs-on: ubuntu-latest