Update angular-cli monorepo to v21

Author: renovate[bot]

flink-runtime-web/web-dashboard/package.json

@@ -36,13 +36,13 @@
     "zone.js": "0.16.0"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "21.0.1",
+    "@angular-devkit/build-angular": "21.0.4",
     "@angular-eslint/builder": "21.0.1",
     "@angular-eslint/eslint-plugin": "21.0.1",
     "@angular-eslint/eslint-plugin-template": "21.0.1",
     "@angular-eslint/schematics": "21.0.1",
     "@angular-eslint/template-parser": "21.0.1",
-    "@angular/cli": "21.0.1",
+    "@angular/cli": "21.0.4",
     "@angular/compiler-cli": "13.4.0",
     "@angular/language-service": "13.4.0",
     "@testing-library/angular": "19.0.0",