refactor: update electron, electron-builder to latest (2.0.2, 20.14.7)

Author: leo6104

Diff for: package.json

@@ -56,8 +56,8 @@
     "core-js": "2.5.6",
     "cross-env": "5.1.5",
     "dotenv": "5.0.1",
-    "electron": "2.0.1",
-    "electron-builder": "20.13.4",
+    "electron": "2.0.2",
+    "electron-builder": "20.14.7",
     "electron-reload": "1.2.2",
     "fs-extra": "6.0.1",
     "jasmine-core": "3.1.0",