Update npm dependencies

Author: jsor

package-lock.json

@@ -23,13 +23,13 @@
     "domestique": "^1.6.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.2.2",
+    "@babel/core": "^7.3.4",
     "@babel/plugin-syntax-dynamic-import": "^7.2.0",
-    "@babel/preset-env": "^7.3.1",
+    "@babel/preset-env": "^7.3.4",
     "babel-loader": "^8.0.5",
     "clean-webpack-plugin": "^1.0.1",
     "css-loader": "^2.1.0",
-    "cssnano": "^4.1.8",
+    "cssnano": "^4.1.10",
     "file-loader": "^3.0.1",
     "mini-css-extract-plugin": ">=0.4.0 <0.4.3",
     "postcss-assets-webpack-plugin": "^3.0.0",
@@ -38,9 +38,9 @@
     "postcss-import": "^12.0.1",
     "postcss-loader": "^3.0.0",
     "style-loader": "^0.23.1",
-    "webpack": "^4.29.0",
-    "webpack-cli": "^3.2.1",
-    "webpack-dev-server": "^3.1.14",
+    "webpack": "^4.29.6",
+    "webpack-cli": "^3.2.3",
+    "webpack-dev-server": "^3.2.1",
     "webpack-manifest-plugin": "^2.0.4"
   }
 }