Update GitHub Pages deployment token to use GH_PAT

Author: 611de

.github/workflows/deploy.yml

@@ -41,6 +41,6 @@ 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
           force_orphan: true