Bump coverallsapp/github-action from 2.3.0 to 2.3.4

Bumps [coverallsapp/github-action](https://github.com/coverallsapp/github-action) from 2.3.0 to 2.3.4.
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](643bc377ff...cfd0633edb)

---
updated-dependencies:
- dependency-name: coverallsapp/github-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/unit_tests.yaml

@@ -23,7 +23,7 @@ jobs:
     - name: Convert coverage to lcov
       uses: jandelgado/gcov2lcov-action@c680c0f7c7442485f1749eb2a13e54a686e76eb5
     - name: Coveralls
-      uses: coverallsapp/github-action@643bc377ffa44ace6394b2b5d0d3950076de9f63
+      uses: coverallsapp/github-action@cfd0633edbd2411b532b808ba7a8b5e04f76d2c8
       with:
         github-token: ${{ secrets.github_token }}
         path-to-lcov: coverage.lcov