Use standard GITHUB_TOKEN secret for auth

.github/workflows/check-mod.yml

@@ -22,9 +22,9 @@ jobs:
       - name: Identify Changed Mods
         id: find-changed-mods
         run: |
-          # Get the list of files changed in the PR using GitHub API with PAT
+          # Get the list of files changed in the PR using GitHub API
           API_RESPONSE=$(curl -s -X GET \
-            -H "Authorization: token ${{ secrets.PAT_TOKEN }}" \
+            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
             -H "Accept: application/vnd.github.v3+json" \
             "https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/files")