Bump actions/cache from 4.1.2 to 4.2.0 (#47)

Bumps [actions/cache](https://github.com/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
...

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

.github/workflows/haskell.yml

@@ -53,7 +53,7 @@ jobs:
     # cache
 
     - name: Cache store
-      uses: actions/cache@v4.1.2
+      uses: actions/cache@v4.2.0
       with:
         path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
         key: ${{ runner.os }}-${{ hashFiles('cabal.project.freeze') }}