Bump actions/cache from 4.0.0 to 4.0.2 (#368)

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](13aacd865c...0c45773b62)

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

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

.github/workflows/unit_tests.yaml

@@ -10,7 +10,7 @@ jobs:
       uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491
       with:
         go-version: 1.19
-    - uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2
+    - uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9
       with:
         path: |
           ~/go/pkg/mod