Bump actions/cache from 3 to 4 in /.github/actions/setup-build

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

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

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

Author: dependabot[bot]

.github/actions/setup-build/action.yml

@@ -76,7 +76,7 @@ runs:
     # We have to restore package sources before `cabal update`
     # because it overwrites the hackage index with the cached one
     - name: Hackage sources cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       env:
         cache-name: hackage-sources
       with:
@@ -101,7 +101,7 @@ runs:
 
     - name: Compiled deps cache
       id: compiled-deps
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       env:
         cache-name: compiled-deps
       with: