Update coveralls GH Action version.

Author: gkellogg

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
       - name: Run tests
         run: ruby --version; bundle exec rspec spec || $ALLOW_FAILURES
       - name: Coveralls GitHub Action
-        uses: coverallsapp/github-action@v1.1.2
+        uses: coverallsapp/github-action@v2
         if: "matrix.ruby == '3.0'"
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -66,7 +66,7 @@ jobs:
       - name: Run tests
         run: ruby --version; bundle exec rspec spec || $ALLOW_FAILURES
       - name: Coveralls GitHub Action
-        uses: coverallsapp/github-action@v1.1.2
+        uses: coverallsapp/github-action@v2
         if: "matrix.ruby == '3.0'"
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}