chore(deps): update dependency @angular/core to v20.3.18 [security]

Author: renovate[bot]

ct-angular/package.json

@@ -15,7 +15,7 @@
     "@angular/animations": "17.3.8",
     "@angular/common": "17.3.8",
     "@angular/compiler": "17.3.8",
-    "@angular/core": "17.3.8",
+    "@angular/core": "20.3.18",
     "@angular/forms": "17.3.8",
     "@angular/platform-browser": "17.3.8",
     "@angular/platform-browser-dynamic": "17.3.8",