Bump actions/cache from 4.0.0 to 4.0.2

Bumps [actions/cache](https://github.com/actions/cache) from 4.0.0 to 4.0.2.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4.0.0...v4.0.2)

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

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

.github/workflows/ci.yaml

@@ -31,7 +31,7 @@ jobs:
           cabal-version: ${{ matrix.cabal }}
       - run: cabal update
       - run: cabal freeze $CONFIG
-      - uses: actions/[email protected].0
+      - uses: actions/[email protected].2
         with:
           path: |
             ${{ steps.setup-haskell-cabal.outputs.cabal-store }}