electron update

package.json

@@ -95,7 +95,7 @@
     "diskusage": "^0.2.4",
     "electron-context-menu": "^0.9.1",
     "electron-log": "^2.2.14",
-    "electron-updater": "^2.20.1",
+    "electron-updater": "^2.21.3",
     "fs-jetpack": "^1.2.0",
     "iconv-lite": "^0.4.19",
     "ipaddr.js": "^1.5.4",
@@ -127,7 +127,7 @@
     "babel-plugin-transform-object-rest-spread": "^7.0.0-beta.3",
     "chai": "^4.1.2",
     "css-loader": "^0.28.7",
-    "electron": "1.7.13",
+    "electron": "1.8.4",
     "electron-builder": "^19.56.2",
     "friendly-errors-webpack-plugin": "^1.6.1",
     "mocha": "^5.0.5",