fixup! ci: Use xml2rfc-fonts for tests

.github/workflows/checks.yml

@@ -131,7 +131,7 @@ jobs:
         
     - name: Install dependencies
       run: |
-        brew install pango pillow libffi groff make diffutils
+        brew install weasyprint groff make diffutils
         echo "Installing pip + wheel..."
         python -m pip install --upgrade pip wheel
         echo "Installing requirements.txt + test dependencies..."