update ci (#9)

Author: GiggleLiu

.github/workflows/CI.yml

@@ -40,3 +40,13 @@ jobs:
           flag-name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }}
           parallel: false
           path-to-lcov: lcov.info
+
+  finish:
+      name: Coveralls Finished
+      needs: test
+      runs-on: ubuntu-latest
+      steps:
+        - uses: coverallsapp/github-action@master
+          with:
+            github-token: ${{ secrets.GITHUB_TOKEN }}
+            parallel-finished: true