e6f96fb fix(@angular-devkit/build-angular): use sourcemap object in karma plugin (#13584)

Author: Angular Builds

package.json

@@ -6,11 +6,11 @@
   "typings": "src/index.d.ts",
   "builders": "builders.json",
   "dependencies": {
-    "@angular-devkit/architect": "github:angular/angular-devkit-architect-builds#0496b51",
-    "@angular-devkit/build-optimizer": "github:angular/angular-devkit-build-optimizer-builds#0496b51",
-    "@angular-devkit/build-webpack": "github:angular/angular-devkit-build-webpack-builds#0496b51",
-    "@angular-devkit/core": "github:angular/angular-devkit-core-builds#0496b51",
-    "@ngtools/webpack": "github:angular/ngtools-webpack-builds#0496b51",
+    "@angular-devkit/architect": "github:angular/angular-devkit-architect-builds#e6f96fb",
+    "@angular-devkit/build-optimizer": "github:angular/angular-devkit-build-optimizer-builds#e6f96fb",
+    "@angular-devkit/build-webpack": "github:angular/angular-devkit-build-webpack-builds#e6f96fb",
+    "@angular-devkit/core": "github:angular/angular-devkit-core-builds#e6f96fb",
+    "@ngtools/webpack": "github:angular/ngtools-webpack-builds#e6f96fb",
     "ajv": "6.8.1",
     "autoprefixer": "9.4.7",
     "circular-dependency-plugin": "5.0.2",