Update angular monorepo to v21

Author: renovate[bot]

package.json

@@ -28,18 +28,18 @@
     "tslib": "^2.6.2"
   },
   "peerDependencies": {
-    "@angular/common": "^18.0.2"
+    "@angular/common": "^18.0.2 || ^21.0.0"
   },
   "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": "~5.1.4",
     "jasmine-core": "~5.1.1",
     "karma": "~6.4.2",