fix: use PAT_TOKEN for submodule update workflow

.github/workflows/update-submodule.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.PAT_TOKEN }}
 
       - name: Update submodule to latest
         run: |
@@ -38,6 +38,7 @@ jobs:
         if: steps.changes.outputs.has_changes == 'true'
         uses: peter-evans/create-pull-request@v5
         with:
+          token: ${{ secrets.PAT_TOKEN }}
           commit-message: "chore: update fullstack-template submodule"
           title: "chore: update fullstack-template submodule"
           body: |