chore(deps): update angular-cli monorepo to v21

Author: renovate[bot]

package.json

@@ -51,8 +51,8 @@
     "@angular-eslint/eslint-plugin-template": "20.1.1",
     "@angular-eslint/schematics": "20.1.1",
     "@angular-eslint/template-parser": "20.1.1",
-    "@angular/build": "^20.1.1",
-    "@angular/cli": "^20.1.1",
+    "@angular/build": "^21.0.0",
+    "@angular/cli": "^21.0.0",
     "@angular/compiler-cli": "^20.1.2",
     "@angular/language-service": "^20.1.2",
     "@commitlint/cli": "^20.0.0",