Run bundle install as sudo to avoid errors

See https://github.com/devlooped/ThisAssembly/actions/runs/3813022591/jobs/6486583182

Author: kzu

.github/workflows/pages.yml

@@ -47,7 +47,7 @@ jobs:
       - name: ⚙ jekyll
         run: |
           sudo gem install bundler
-          bundle install
+          sudo bundle install
 
       - name: 🖉 default repo
         if: env.PAGES_REPOSITORY == ''