major deps update, electron 16

Author: hmt

package-lock.json

@@ -17,7 +17,7 @@
   },
   "devDependencies": {
     "builtin-modules": "^3.2.0",
-    "electron": "^15.3.1",
+    "electron": "^16.0.4",
     "electron-builder": "^22.8.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.1.1",