Bump the github-actions group with 1 update

Bumps the github-actions group with 1 update: [actions/cache](https://github.com/actions/cache).


Updates `actions/cache` from 3.3.3 to 4.0.0
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@e12d46a...13aacd8)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/tests.yaml

@@ -33,7 +33,7 @@ jobs:
           cache: pip
           cache-dependency-path: requirements/*.txt
       - name: cache mypy
-        uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c
+        uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2
         with:
           path: ./.mypy_cache
           key: mypy|${{ hashFiles('pyproject.toml') }}