Update dependency @angular/compiler to v21.2.4 [SECURITY]

Author: renovate[bot]

Client/package.json

@@ -31,7 +31,7 @@
   "devDependencies": {
     "@angular/build": "21.1.4",
     "@angular/cli": "21.1.4",
-    "@angular/compiler": "21.1.4",
+    "@angular/compiler": "21.2.4",
     "@angular/compiler-cli": "21.1.4",
     "@openapitools/openapi-generator-cli": "2.28.3",
     "@tailwindcss/postcss": "4.1.18",