dependency-groups.dev and uv in docs (#691)

* dependency-groups.dev and switch to uv in docs
* Separate dependency group for docs

.github/workflows/test-coverage.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install -e .[test]
+        python -m pip install . --group dev
         python -m pip install pytest-cov
     - name: Run tests
       run: |-