Bump actions/cache from 4.2.3 to 4.3.0 (#272)

Bumps [actions/cache](https://github.com/actions/cache) from 4.2.3 to 4.3.0.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@5a3ec84...0057852)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 4.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/app-tests.yaml

@@ -115,7 +115,7 @@ jobs:
             npm run build
 
         - name: Setup mypy cache
-          uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+          uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
           with:
             path: ./.mypy_cache
             key: mypy${{ matrix.os }}-${{ matrix.python_version }}-${{ hashFiles('requirements-dev.txt', 'src/backend/requirements.txt', 'src/backend/pyproject.toml') }}