build(deps): bump actions/cache from 4 to 5 (#38)

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -36,7 +36,7 @@ jobs:
 
       - name: "Restore cached Cargo"
         id: cache-restore
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -59,7 +59,7 @@ jobs:
       - name: Save Cargo / Rust Cache 
         id: cache-save
         if: ${{ github.event_name == 'push' }}
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           path: |
             ~/.cargo/bin/