don't install everything just to lint

.github/workflows/ci.yml

@@ -37,8 +37,7 @@ jobs:
     - name: "Install Python dependencies"
       run: |
         python -m pip install --upgrade uv
-        uv pip install --system --upgrade pip setuptools wheel
-        uv pip install --system ".[lint]"
+        uv pip install --system --upgrade black isort
         uv pip list --system
     - name: "Check format"
       run: |