[deps]: Update angular monorepo to v21

Author: renovate[bot]

ui/package.json

@@ -14,14 +14,14 @@
   },
   "homepage": "https://bitwarden.com",
   "dependencies": {
-    "@angular/animations": "20.3.15",
-    "@angular/common": "20.3.15",
-    "@angular/compiler": "20.3.15",
-    "@angular/core": "20.3.15",
-    "@angular/forms": "20.3.15",
-    "@angular/platform-browser": "20.3.15",
-    "@angular/platform-browser-dynamic": "20.3.15",
-    "@angular/router": "20.3.15",
+    "@angular/animations": "21.0.3",
+    "@angular/common": "21.0.3",
+    "@angular/compiler": "21.0.3",
+    "@angular/core": "21.0.3",
+    "@angular/forms": "21.0.3",
+    "@angular/platform-browser": "21.0.3",
+    "@angular/platform-browser-dynamic": "21.0.3",
+    "@angular/router": "21.0.3",
     "rxjs": "7.8.1",
     "splunk-sdk": "2.0.2",
     "tslib": "2.8.1",
@@ -30,7 +30,7 @@
   "devDependencies": {
     "@angular-devkit/build-angular": "20.3.12",
     "@angular/cli": "20.3.13",
-    "@angular/compiler-cli": "20.3.15",
+    "@angular/compiler-cli": "21.0.3",
     "@tailwindcss/forms": "0.5.9",
     "@types/jasmine": "5.1.4",
     "@types/jquery": "3.5.32",