💚 python versions matrix is user instead of tox is CI process

.github/workflows/ci.yml

@@ -8,6 +8,9 @@ on:
 jobs:
   code_quality:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.8, 3.9, 3.10, 3.11, 3.12]
 
     steps:
       - uses: actions/checkout@v4
@@ -16,8 +19,16 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install tox
+          pip install -e '.[code_quality]'
 
-      - name: Run tox
-        run: tox
+      - name: Run tests
+        run: python -m pytest tests
 
+      - name: Run linter
+        run: python -m ruff check src tests
+
+      - name: Check formatting
+        run: python -m black --check src tests && python -m isort --check src tests
+
+      - name: Check types
+        run: python -m mypy src tests