Bump coverallsapp/github-action from 2.3.3 to 2.3.4

Bumps [coverallsapp/github-action](https://github.com/coverallsapp/github-action) from 2.3.3 to 2.3.4.
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](coverallsapp/github-action@v2.3.3...v2.3.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/nightly.yml

@@ -36,7 +36,7 @@ jobs:
         run: yarn coverage
 
       - name: spot-contracts report coverage
-        uses: coverallsapp/[email protected].3
+        uses: coverallsapp/[email protected].4
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path-to-lcov: "./coverage/lcov.info"