(docs): fix github action to deploy

Author: benjaminbollen

.github/workflows/deploy-mkdocs.yml

@@ -7,6 +7,8 @@ on:
 
 jobs:
   deploy:
+    permissions:
+      contents: write
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -32,5 +34,5 @@ jobs:
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+          github_token: ${{ secrets.GH_PAT }}
           publish_dir: ./docs/site