Revert "fix workflow permissions"

This reverts commit e6f128eaabbb4f9cb07163c70e939f55a0bf1412.

Author: heap-coder

.github/workflows/update-solc.yml

@@ -5,10 +5,6 @@ on:
     - cron: '0 0 * * *'
   workflow_dispatch: {}
 
-permissions:
-  contents: write
-  pull-requests: write
-
 jobs:
   update:
     runs-on: ubuntu-latest
@@ -32,6 +28,7 @@ jobs:
     - name: Create Pull Request
       uses: peter-evans/create-pull-request@v7
       with:
+        token: ${{ secrets.PR_PAT }}
         branch: update-solc
         title: Update solc
         body: |