Bump actions/cache from 4.2.0 to 4.2.3 (#446)

Bumps [actions/cache](https://github.com/actions/cache) from 4.2.0 to 4.2.3.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@1bd1e32...5a3ec84)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 4.2.3
  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>

Author: dependabot[bot]

.github/workflows/elixir_test.yml

@@ -49,7 +49,7 @@ jobs:
 
       - name: Retrieve PLT Cache
 
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
         id: plt-cache
         with:
           path: priv/plts