Silence a deprecation waring in Pages generation

This should keep the Pages build running until staticsite & MarkupSafe
add a pyproject.toml

.github/workflows/pages.yml

@@ -25,6 +25,7 @@ jobs:
       - name: Build
         run: |
           sudo apt-get --yes install --no-install-recommends libimage-exiftool-perl
+          pip install wheel
           pip install git+https://github.com/spanezz/staticsite.git@a55caca1cd599d343ed454296317edd6e0539926
           ssite build --output public