Replace flake8 with Ruff for linting in GitHub Actions workflow

Author: PierreRaybaut

.github/workflows/test_pyqt5.yml

@@ -34,16 +34,12 @@ jobs:
         sudo apt install libxkbcommon-x11-0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 libxcb-xfixes0 x11-utils
         /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -screen 0 1920x1200x24 -ac +extension GLX
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
+        python -m pip install ruff pytest
         pip install PyQt5 setuptools numpy Cython
         python setup.py build_ext --inplace
         pip install .[test]
-    - name: Lint with flake8
-      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=10 --max-line-length=127 --statistics
+    - name: Lint with Ruff
+      run: ruff check --output-format=github plotpy
     - name: Test with pytest
       run: |
         pytest