chore(deps): update angular monorepo to v21

Author: renovate[bot]

package.json

@@ -38,13 +38,13 @@
   "devDependencies": {
     "@angular-devkit/build-angular": "^18.0.3",
     "@angular/cli": "^18.0.3",
-    "@angular/compiler": "^18.0.2",
-    "@angular/compiler-cli": "^18.0.2",
-    "@angular/core": "^18.0.2",
-    "@angular/forms": "^18.0.2",
-    "@angular/platform-browser": "^18.0.2",
-    "@angular/platform-browser-dynamic": "^18.0.2",
-    "@angular/router": "^18.0.2",
+    "@angular/compiler": "^21.0.0",
+    "@angular/compiler-cli": "^21.0.0",
+    "@angular/core": "^21.0.0",
+    "@angular/forms": "^21.0.0",
+    "@angular/platform-browser": "^21.0.0",
+    "@angular/platform-browser-dynamic": "^21.0.0",
+    "@angular/router": "^21.0.0",
     "@types/jasmine": "~4.6.0",
     "jasmine-core": "~4.6.0",
     "karma": "~6.4.2",