Bump actions/cache from 2 to 3 (#239)

Bumps [actions/cache](https://github.com/actions/cache) from 2 to 3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2...v3)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
         curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | python -
         echo "${HOME}/.poetry/bin" >> $GITHUB_PATH
     - name: Set up cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: .venv
         key: venv-${{ matrix.python-version }}-${{ hashFiles('poetry.lock') }}