fix(@angular-devkit/build-angular): update less to 4.9.0

Update less dependency to version 4.9.0 to address a vulnerability with image-size.

closes #33934

Author: alan-agius4

packages/angular/build/package.json

@@ -52,7 +52,7 @@
     "@angular/ssr": "workspace:*",
     "@angular-devkit/core": "workspace:*",
     "jsdom": "26.1.0",
-    "less": "4.4.0",
+    "less": "4.9.0",
     "ng-packagr": "20.3.0",
     "postcss": "8.5.23",
     "rxjs": "7.8.2",

packages/angular_devkit/build_angular/package.json

@@ -34,7 +34,7 @@
     "istanbul-lib-instrument": "6.0.3",
     "jsonc-parser": "3.3.1",
     "karma-source-map-support": "1.4.0",
-    "less": "4.4.0",
+    "less": "4.9.0",
     "less-loader": "12.3.0",
     "license-webpack-plugin": "4.0.2",
     "loader-utils": "3.3.1",