Merge pull request #9 from robomics/ci/enable-caching

Turn on GHA caching for pip deps

Author: robomics

.github/workflows/ci.yml

@@ -75,6 +75,8 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python_version }}
+          cache: pip
+          cache-dependency-path: pyproject.toml
 
       - name: Install package
         run: pip install --verbose '.[test]'