feat(Electron): Update electron to 1.8.4

Author: adlk

package.json

@@ -93,7 +93,7 @@
     "cz-conventional-changelog": "^2.0.0",
     "del": "^2.2.2",
     "dotenv": "^4.0.0",
-    "electron": "^1.7.12",
+    "electron": "1.8.4",
     "electron-builder": "19.15.1",
     "electron-packager": "^8.7.0",
     "electron-rebuild": "^1.6.0",

yarn.lock

@@ -45,9 +45,9 @@
   dependencies:
     nan "^2.0.0"
 
-"@types/node@^7.0.18":
-  version "7.0.43"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-7.0.43.tgz#a187e08495a075f200ca946079c914e1a5fe962c"
+"@types/node@^8.0.24":
+  version "8.9.5"
+  resolved "http://registry.npmjs.org/@types/node/-/node-8.9.5.tgz#162b864bc70be077e6db212b322754917929e976"
 
 abbrev@1:
   version "1.1.0"
@@ -2089,11 +2089,11 @@ electron-window-state@^4.1.0:
     jsonfile "^2.2.3"
     mkdirp "^0.5.1"
 
-electron@^1.7.12:
-  version "1.7.12"
-  resolved "https://registry.yarnpkg.com/electron/-/electron-1.7.12.tgz#dcc61a2c1b0c3df25f68b3425379a01abd01190e"
+electron@1.8.4:
+  version "1.8.4"
+  resolved "https://registry.yarnpkg.com/electron/-/electron-1.8.4.tgz#cca8d0e6889f238f55b414ad224f03e03b226a38"
   dependencies:
-    "@types/node" "^7.0.18"
+    "@types/node" "^8.0.24"
     electron-download "^3.0.1"
     extract-zip "^1.0.3"