Add step to install development dependencies in linting workflow

.github/workflows/linting_and_type_checking.yml

@@ -30,6 +30,8 @@ jobs:
 
       - name: Set up Python ${{ matrix.python-version }}
         run: uv python install ${{ matrix.python-version }}
+
+      - name: Install dev dependencies
         run: uv pip install -e ".[dev]"
 
       - name: Run mypy