update github workflow from flake8 to ruff

.github/workflows/main.yml

@@ -33,14 +33,11 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 pytest
+        pip install ruff pytest
         pip install -r requirements/local.txt
-    - name: Lint with Flake8
+    - name: Lint with Ruff
       run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=8 --max-line-length=100 --statistics
+        ruff check .
     - name: Test with Pytest
       run: |
         pytest -m "not email_configured and not oauth_configured"