test(@ngtools/webpack): update packages/webpack/test-app E2E test to use Angular v13

This E2E test was previously using v12 versions to perform the test. This is technically unsupported and may start to fail once breaking changes are introduced in v13+.

Author: clydin

tests/legacy-cli/e2e/assets/webpack/test-app/package.json

@@ -2,14 +2,14 @@
   "name": "test",
   "license": "MIT",
   "dependencies": {
-    "@angular/common": "^12.0.0-next",
-    "@angular/compiler": "^12.0.0-next",
-    "@angular/compiler-cli": "^12.0.0-next",
-    "@angular/core": "^12.0.0-next",
-    "@angular/platform-browser": "^12.0.0-next",
-    "@angular/platform-browser-dynamic": "^12.0.0-next",
-    "@angular/platform-server": "^12.0.0-next",
-    "@angular/router": "^12.0.0-next",
+    "@angular/common": "^13.0.0-next",
+    "@angular/compiler": "^13.0.0-next",
+    "@angular/compiler-cli": "^13.0.0-next",
+    "@angular/core": "^13.0.0-next",
+    "@angular/platform-browser": "^13.0.0-next",
+    "@angular/platform-browser-dynamic": "^13.0.0-next",
+    "@angular/platform-server": "^13.0.0-next",
+    "@angular/router": "^13.0.0-next",
     "@ngtools/webpack": "0.0.0",
     "core-js": "^3.10.0",
     "rxjs": "^6.6.7",