build: update webpack to version 4.39.1 (#15229)

Author: renovate-bot

packages/angular_devkit/build_angular/package.json

@@ -52,7 +52,7 @@
     "tree-kill": "1.2.1",
     "terser": "4.1.3",
     "terser-webpack-plugin": "1.4.1",
-    "webpack": "4.38.0",
+    "webpack": "4.39.1",
     "webpack-dev-middleware": "3.7.0",
     "webpack-dev-server": "3.7.2",
     "webpack-merge": "4.2.1",

packages/angular_devkit/build_webpack/package.json

@@ -17,7 +17,7 @@
     "webpack-dev-server": "^3.1.4"
   },
   "devDependencies": {
-    "webpack": "4.38.0",
+    "webpack": "4.39.1",
     "webpack-dev-server": "^3.1.4"
   }
 }

packages/ngtools/webpack/package.json

@@ -36,6 +36,6 @@
     "@angular/compiler": "~8.2.0-rc.0",
     "@angular/compiler-cli": "~8.2.0-rc.0",
     "typescript": "3.5.3",
-    "webpack": "4.38.0"
+    "webpack": "4.39.1"
   }
 }