👷 add black and isort to CI

.github/workflows/all.yml

@@ -23,9 +23,20 @@ jobs:
           python -m pip install -r requirements.txt
       - name: Run cmake_downloader.py
         run: python cmake_downloader.py --latest_release
-      - name: Style checks
-        if: matrix.python-version == '3.12'
+
+  style:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.12
+      - name: Setup virtual environment
         run: |
+          python -m pip install --upgrade pip
+          python -m pip install wheel
           python -m pip install -r requirements-dev.txt
+      - name: Style checks
+        run: |
           black --check *.py
           isort --check *.py