FIX: skip Lint with pysen if 3.7

.github/workflows/ci.yaml

@@ -42,6 +42,7 @@ jobs:
  python -m pip install --upgrade pip
  pip install -e ".[dev]"
  - name: Lint with pysen
+ if: ${{ matrix.python-version != '3.7' }}
  run: |
  pysen run lint
  - name: Test with pytest