ci: Switch workflow linting to ruff

.github/workflows/lint.yml

@@ -1,42 +1,17 @@
-name: Lint
+name: Ruff
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-on: [push, pull_request]
+on:
+  push:
+  pull_request:
 
 jobs:
-  flake8:
-    name: flake8
+  ruff:
     runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.10"
-      - name: Install flake8
-        run: pip install --upgrade flake8
-      - name: Run flake8
-        uses: liskin/gh-problem-matcher-wrap@v3
-        with:
-          linters: flake8
-          run: flake8
 
-  isort:
-    runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.10"
-      - run: python -m pip install isort
-      - name: isort
-        uses: liskin/gh-problem-matcher-wrap@v3
-        with:
-          linters: isort
-          run: isort --check-only --diff ./
+    - uses: actions/checkout@v4
+
+    - run: python -Im pip install --user ruff
+
+    - name: Run ruff
+      run: ruff --output-format=github djangocms_alias