Fix ruff version to 0.3.4 in order to overcome issue with version 0.3…

….5. (#3354)

Co-authored-by: Ben Zickel <[email protected]>

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip wheel 'setuptools!=58.5.*,<60'
-        pip install ruff black mypy nbstripout nbformat
+        pip install ruff==0.3.4 black mypy nbstripout nbformat
     - name: Lint
       run: |
         make lint