build: update dependency @ngtools/webpack to v19

Author: angular-robot

packages/angular_devkit/build_angular/package.json

@@ -21,7 +21,7 @@
     "@babel/preset-env": "7.26.0",
     "@babel/runtime": "7.26.0",
     "@discoveryjs/json-ext": "0.6.3",
-    "@ngtools/webpack": "0.0.0-PLACEHOLDER",
+    "@ngtools/webpack": "19.0.5",
     "@vitejs/plugin-basic-ssl": "1.2.0",
     "ansi-colors": "4.1.3",
     "autoprefixer": "10.4.20",