chore(e2e/nx): update angular-cli monorepo to v21

Author: renovate[bot]

e2e/nx/package.json

@@ -24,8 +24,8 @@
     "zone.js": "0.15.1"
   },
   "devDependencies": {
-    "@angular/build": "20.3.14",
-    "@angular/cli": "20.3.14",
+    "@angular/build": "21.1.0",
+    "@angular/cli": "21.1.0",
     "@angular/compiler-cli": "20.3.16",
     "@angular/language-service": "20.3.16",
     "@nx/jest": "22.3.3",