feat: angular 21 update

Author: Angular2Guy

hotelSelection-frontend/src/angular/package-lock.json

@@ -23,13 +23,13 @@
   "private": true,
   "dependencies": {
     "@angular/animations": "^21.0.4",
-    "@angular/cdk": "^20.0.2",
+    "@angular/cdk": "^21.0.3",
     "@angular/common": "^21.0.4",
     "@angular/compiler": "^21.0.4",
     "@angular/core": "^21.0.4",
     "@angular/forms": "^21.0.4",
     "@angular/localize": "^21.0.4",
-    "@angular/material": "^20.0.2",
+    "@angular/material": "^21.0.3",
     "@angular/platform-browser": "^21.0.4",
     "@angular/platform-browser-dynamic": "^21.0.4",
     "@angular/router": "^21.0.4",