Chore(deps): Bump actions/cache from 3 to 4

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] <support@github.com>

.github/workflows/build.yml

@@ -125,7 +125,7 @@ jobs:
 
       - name: Cache installed C core
         id: cache-c-core
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: build-deps
           key: C-core-cache-${{ runner.os }}-${{ matrix.cmake_arch }}-llvm${{ env.LLVM_VERSION }}-${{ hashFiles('scripts/build_igraph.sh') }}-${{ hashFiles('scripts/build_libleidenalg.sh') }}
@@ -182,7 +182,7 @@ jobs:
 
       - name: Cache installed C core
         id: cache-c-core
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: build-deps
           key: C-core-cache-${{ runner.os }}-${{ matrix.cmake_arch }}-llvm${{ env.LLVM_VERSION }}-${{ hashFiles('scripts/build_igraph.sh') }}-${{ hashFiles('scripts/build_libleidenalg.sh') }}