ci: update coveralls action

Author: crimx

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
         run: pnpm run test:ci
 
       - name: Coveralls 🎉
-        uses: coverallsapp/github-action@master
+        uses: coverallsapp/github-action@v2
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}