chore(deps): bump coverallsapp/github-action from 2.3.4 to 2.3.6

Bumps [coverallsapp/github-action](https://github.com/coverallsapp/github-action) from 2.3.4 to 2.3.6.
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](coverallsapp/github-action@v2.3.4...v2.3.6)

---
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/iroha2-dev-pr.yml

@@ -126,7 +126,7 @@ jobs:
           name: report-coverage
           path: lcov.info
       - name: Upload coverage to Coveralls
-        uses: coverallsapp/github-action@v2.3.4
+        uses: coverallsapp/github-action@v2.3.6
         with:
           file: lcov.info
           format: lcov