Bump all of the dev dependencies

- remove upper version caps
- updated the minimum version of most of Pelican's runtime deps
- replaced black with ruff as a formatter for pelican
- added a cache step to the docs CI task so that the docs can be
  downloaded and inspected.

.github/workflows/main.yml

@@ -80,6 +80,11 @@ jobs:
         run: python -m pip install -U pip tox
       - name: Check
         run: tox -e docs
+      - name: cache the docs for inspection
+        uses: actions/upload-artifact@v3
+        with:
+          name: docs
+          path: docs/_build/html/
 
   deploy:
     name: Deploy