Update webpack related packages

package.json

@@ -99,7 +99,7 @@
     "keytar": "^4.0.3",
     "localforage": "^1.5.0",
     "node-sass": "^4.5.3",
-    "npm": "^4.2.0",
+    "npm": "^5.5.1",
     "rc-progress": "^2.0.6",
     "react": "^15.4.0",
     "react-dom": "^15.4.0",
@@ -151,12 +151,12 @@
     "lint-staged": "^3.6.0",
     "node-loader": "^0.6.0",
     "prettier": "^1.4.2",
-    "style-loader": "^0.18.2",
-    "webpack": "^3.0.0",
+    "style-loader": "^0.19.0",
+    "webpack": "^3.10.0",
     "webpack-dev-server": "^2.4.4",
     "webpack-merge": "^4.1.1",
     "webpack-notifier": "^1.5.0",
-    "webpack-sources": "1.0.1",
+    "webpack-sources": "1.1.0",
     "webpack-target-electron-renderer": "^0.4.0"
   },
   "postinstall": "install-app-deps",