ci(ruff): try adding Format and lint (python) step

Basing off the equivalent step in `mosaic`
https://github.com/uwdata/mosaic/blob/797a7c379e5a50228dabf5953c5de58fe9ee00a2/.github/workflows/test.yml#L50-L53

Author: dangotbanned

Diff for: .github/workflows/test.yml

@@ -31,6 +31,11 @@ jobs:
       - name: Format toml
         run: uvx taplo fmt
 
+      - name: Format and lint (python)
+        run: |
+          uvx ruff check
+          uvx ruff format --check
+
       - name: Install Node dependencies
         run: npm ci