Bump coverallsapp/github-action from 2.3.6 to 2.3.7

Bumps [coverallsapp/github-action](https://github.com/coverallsapp/github-action) from 2.3.6 to 2.3.7.
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](coverallsapp/github-action@648a8eb...5cbfd81)

---
updated-dependencies:
- dependency-name: coverallsapp/github-action
  dependency-version: 2.3.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -71,7 +71,7 @@ jobs:
         path: tmp/screenshots
         if-no-files-found: ignore
     - name: Report completion to Coveralls
-      uses: coverallsapp/github-action@648a8eb78e6d50909eff900e4ec85cab4524a45b # v2.3.6
+      uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e # v2.3.7
       with:
         github-token: ${{ secrets.github_token }}
         flag-name: ruby-${{ matrix.ruby }}
@@ -84,7 +84,7 @@ jobs:
     timeout-minutes: 1
     steps:
     - name: Report completion to Coveralls
-      uses: coverallsapp/github-action@648a8eb78e6d50909eff900e4ec85cab4524a45b # v2.3.6
+      uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e # v2.3.7
       with:
         github-token: ${{ secrets.github_token }}
         parallel-finished: true