Update to Electron v4.1.2 to fix permissions issue

https://github.com/electron/electron/releases/tag/v4.1.2

Permissions issue: https://github.com/electron/electron/issues/17581

package.json

@@ -121,7 +121,7 @@
     "asar": "0.14.0",
     "bower": "1.8.2",
     "chai": "4.1.2",
-    "electron": "4.1.1",
+    "electron": "4.1.2",
     "electron-builder": "20.33.1",
     "electron-icon-maker": "0.0.3",
     "eslint": "4.14.0",

yarn.lock

@@ -2692,10 +2692,10 @@ electron-updater@3.2.0:
     semver "^5.6.0"
     source-map-support "^0.5.9"
 
-electron@4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/electron/-/electron-4.1.1.tgz#dc9343ba829cabbf01364761e72796f766704184"
-  integrity sha512-ABIEXTw55eiCW30a6F8fWLHL0QeH+yK3JgZpvTZZWLnkO5/SmG38avMxRhKOUQstRpYb+EEpE8IAM2DVOaTvtw==
+electron@4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/electron/-/electron-4.1.2.tgz#dc8be0f219c73d60a97675d6d3c5b040c4f50513"
+  integrity sha512-QWz298CaH2jLyFVje01sj4fSEdXJj+oKVw2jNUovrhZE5jmFE4cr/KqZ7iHX00DG6AwmDF4W1Xrv0V+aQOkieQ==
   dependencies:
     "@types/node" "^10.12.18"
     electron-download "^4.1.0"