[CI] Update nwjs version to v0.88.0

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     env:
-      nwjs-version: v0.45.1
+      nwjs-version: v0.88.0
     steps:
     - uses: actions/checkout@v2
     - uses: krdlab/setup-haxe@v1