feat(@angular-devkit/build-angular): revert to webpack 4.9.2

Workaround for webpack/webpack#7499

Author: filipesilva

package-lock.json

@@ -153,7 +153,7 @@
     "typescript": "~2.7.2",
     "uglifyjs-webpack-plugin": "^1.2.5",
     "url-loader": "^1.0.1",
-    "webpack": "~4.11.1",
+    "webpack": "~4.9.2",
     "webpack-dev-middleware": "^3.1.3",
     "webpack-dev-server": "^3.1.4",
     "webpack-merge": "^4.1.2",

package.json

@@ -49,7 +49,7 @@
     "tree-kill": "^1.2.0",
     "uglifyjs-webpack-plugin": "^1.2.5",
     "url-loader": "^1.0.1",
-    "webpack": "~4.11.1",
+    "webpack": "~4.9.2",
     "webpack-dev-middleware": "^3.1.3",
     "webpack-dev-server": "^3.1.4",
     "webpack-merge": "^4.1.2",

packages/angular_devkit/build_angular/package.json

@@ -78,6 +78,7 @@ const ignoredPackages = [
 
   '@webassemblyjs/ieee754@1.5.10', // MIT but no LICENSE file. `license` field in package.json.
   '@webassemblyjs/leb128@1.5.10', // Apache 2.0 license, but get discovered as "Apache".
+  '@webassemblyjs/leb128@1.4.3', // Apache 2.0 license, but get discovered as "Apache".
 ];
 
 // Find all folders directly under a `node_modules` that have a package.json.