fix(deps): update dependency @angular/compiler to v21.2.4 [security]

Author: renovate[bot]

apps/demos/package.json

@@ -19,7 +19,7 @@
         "@angular-devkit/build-angular": "~21.1.0",
         "@angular/cli": "~21.1.5",
         "@angular/common": "~21.1.0",
-        "@angular/compiler": "~21.1.0",
+        "@angular/compiler": "~21.2.0",
         "@angular/compiler-cli": "~21.1.0",
         "@angular/core": "~21.1.0",
         "@angular/forms": "~21.1.0",