chore(deps): update angular-cli monorepo to v20

Author: renovate[bot]

packages/examples/angular-webpack-example/package.json

@@ -25,8 +25,8 @@
   },
   "devDependencies": {
     "@angular-builders/custom-webpack": "18.0.0",
-    "@angular-devkit/build-angular": "18.2.21",
-    "@angular/cli": "18.2.21",
+    "@angular-devkit/build-angular": "20.3.5",
+    "@angular/cli": "20.3.5",
     "@angular/compiler-cli": "18.2.13",
     "@types/jasmine": "5.1.9",
     "@types/node": "22.18.10",