chore(deps): update angular-cli monorepo to v21

Author: renovate[bot]

packages/angular/package.json

@@ -32,8 +32,8 @@
     "directory": "packages/angular"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^19.1.2",
-    "@angular/cli": "~19.1.2",
+    "@angular-devkit/build-angular": "^21.0.2",
+    "@angular/cli": "~21.0.2",
     "@angular/compiler-cli": "^19.1.1",
     "@angular/core": "^19.1.1",
     "ng-packagr": "^19.1.0",