Bump actions/cache from 4.1.2 to 4.2.0 in the actions-version group

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


Updates `actions/cache` from 4.1.2 to 4.2.0
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4.1.2...v4.2.0)

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

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

.github/workflows/run-pytest.yml

@@ -55,7 +55,7 @@ jobs:
       shell: bash
       run: |
         echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-    - uses: actions/cache@v4.1.2
+    - uses: actions/cache@v4.2.0
       with:
         path: ${{ steps.pip-cache.outputs.dir }}
         key: dashboard-unit-test-${{ matrix.os }}-${{ matrix.python }}-${{ matrix.dependencies }}-pip-${{ hashFiles('requirements/requirements-test.txt', '.github/workflows/ci-oldest-reqs.txt') }}