chore(package): update electron to version 1.7.11

Author: greenkeeper[bot]

package.json

@@ -83,7 +83,7 @@
   },
   "devDependencies": {
     "clean-css": "4.1.9",
-    "electron": "1.7.10",
+    "electron": "1.7.11",
     "electron-builder": "19.54.0",
     "electron-rebuild": "1.7.3",
     "node-json-minify": "1.0.0",