fix: update npm dependencies and fix build issues

- Updated Angular devkit build packages
- Resolved missing dev-server builder error
:wq

cloth-dit-web/package.json

@@ -31,6 +31,7 @@
     "zone.js": "~0.15.0"
   },
   "devDependencies": {
+    "@angular-devkit/build-angular": "^20.0.4",
     "@angular/build": "^20.0.4",
     "@angular/cli": "^20.0.4",
     "@angular/compiler-cli": "^20.0.0",