ci(github-actions): Bump coverallsapp/github-action from 2.3.0 to 2.3.1

Bumps [coverallsapp/github-action](https://github.com/coverallsapp/github-action) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](coverallsapp/github-action@v2.3.0...v2.3.1)

---
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/github-ci.yml

@@ -37,7 +37,7 @@ jobs:
       run: npm run test:unit:coverage
 
     - name: Send report to Coveralls for package @ui5/middleware-code-coverage
-      uses: coverallsapp/github-action@v2.3.0
+      uses: coverallsapp/github-action@v2.3.1
       with:
         flag-name: middleware-code-coverage
         base-path: ./packages/middleware-code-coverage