chore(deps): update dependency webpack to v4.39.2

Author: renovate-bot

package.json

@@ -70,7 +70,7 @@
     "vue-html-loader": "1.2.4",
     "vue-loader": "15.7.1",
     "vue-template-compiler": "2.6.10",
-    "webpack": "4.39.1",
+    "webpack": "4.39.2",
     "webpack-dev-server": "3.8.0"
   },
   "browserslist": [

yarn.lock

@@ -6447,9 +6447,9 @@ webpack-sources@^1.4.0, webpack-sources@^1.4.1:
     source-list-map "^2.0.0"
     source-map "~0.6.1"
 
-[email protected].1:
-  version "4.39.1"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.39.1.tgz#60ed9fb2b72cd60f26ea526c404d2a4cc97a1bd8"
+[email protected].2:
+  version "4.39.2"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.39.2.tgz#c9aa5c1776d7c309d1b3911764f0288c8c2816aa"
   dependencies:
     "@webassemblyjs/ast" "1.8.5"
     "@webassemblyjs/helper-module-context" "1.8.5"