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

Author: github-actions[bot]

package.json

@@ -41,8 +41,8 @@
     "zone.js": "~0.15.0"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^20.0.0",
-    "@angular-devkit/core": "^20.0.0",
+    "@angular-devkit/build-angular": "^21.0.0",
+    "@angular-devkit/core": "^21.0.0",
     "@angular-eslint/eslint-plugin": "^21.0.1",
     "@angular-eslint/eslint-plugin-template": "^21.0.1",
     "@angular-eslint/template-parser": "^21.0.1",