chore(deps): update angular monorepo to v21

Author: renovate[bot]

packages/angular/package.json

@@ -65,14 +65,14 @@
   "typings": "./dist/index.d.ts",
   "peerDependencies": {
     "@angular/common": "^19.2.14",
-    "@angular/core": "^19.2.14"
+    "@angular/core": "^21.0.2"
   },
   "dependencies": {
     "tslib": "^2.8.1",
     "unhead": "workspace:*"
   },
   "devDependencies": {
-    "@angular/platform-browser-dynamic": "^20.3.4",
+    "@angular/platform-browser-dynamic": "^21.0.0",
     "zone.js": "^0.15.1"
   }
 }