update ci

Author: GiggleLiu

.github/workflows/ci.yml

@@ -53,5 +53,14 @@ jobs:
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           flag-name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }}
-          parallel: false
+          parallel: true
           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