chore: Add GitHub Coveralls

Author: nschonni

.github/workflows/coverage.yml

@@ -19,14 +19,17 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    env:
-      SKIP_SASS_BINARY_DOWNLOAD_FOR_CI: true
 
     steps:
       - uses: actions/checkout@v2
 
       - name: Install packages
         run: npm install --unsafe-perm
 
-      - name: Run Linting
+      - name: Run Coverage
         run: npm run coverage
+
+      - name: Coveralls GitHub Action
+        uses: coverallsapp/[email protected]
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}