CI: rename main branch to main

Signed-off-by: Daniel Maslowski <info@orangecms.org>

Author: orangecms

.github/workflows/gh-pages.yml

@@ -3,7 +3,7 @@ name: github pages
 on:
   push:
     branches:
-      - master  # TODO: migrate to `main`, also below
+      - main
   pull_request:
 
 jobs:
@@ -26,7 +26,7 @@ jobs:
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
-        if: github.ref == 'refs/heads/master'
+        if: github.ref == 'refs/heads/main'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./public