fix(@ngtools/webpack): add @angular/compiler-cli version 8.1.0-next.0 as peerDependency

Author: alan-agius4

packages/ngtools/webpack/package.json

@@ -28,7 +28,7 @@
     "webpack-sources": "1.3.0"
   },
   "peerDependencies": {
-    "@angular/compiler-cli": ">=8.0.0-beta.0 < 9.0.0",
+    "@angular/compiler-cli": "^8.0.0-beta.0 || ^8.1.0-beta.0 || ^8.2.0-beta.0 || ^8.3.0-beta.0 || ^8.4.0-beta.0 || >=9.0.0-beta < 9",
     "typescript": ">=3.4 < 3.5",
     "webpack": "^4.0.0"
   },