Using rye for Python and package management

.github/workflows/run-formatter.yaml

@@ -7,17 +7,13 @@ jobs:
     runs-on: ubuntu-latest
     name: Format code
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python 3.9
-      uses: actions/setup-python@v5
-      with:
-        python-version: 3.9
-        cache: 'pip'
-    - name: Install dependencies
+    - name: Checkout code
+      uses: actions/checkout@v4
+    - name: Set up rye
+      uses: eifinger/setup-rye@v4
       run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements-dev.lock
-      timeout-minutes: 5
+        rye pin 3.9
+        rye sync
     - name: Run black
       run: black --check .
       timeout-minutes: 5