Bump actions/cache from 3.0.1 to 3.0.4

Bumps [actions/cache](https://github.com/actions/cache) from 3.0.1 to 3.0.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v3.0.1...v3.0.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/elixir.yml

@@ -39,7 +39,7 @@ jobs:
         with:
           otp-version: ${{ matrix.pair.otp }}
           elixir-version: ${{ matrix.pair.elixir }}
-      - uses: actions/cache@v3.0.1
+      - uses: actions/cache@v3.0.4
         with:
           path: |
             deps