chore(deps): update dependency @angular/build to v21.2.6

Author: renovate[bot]

libs/angular-ecmascript-intl/package.json

@@ -37,7 +37,7 @@
     "tslib": "^2.8.1"
   },
   "devDependencies": {
-    "@angular/build": "21.2.1",
+    "@angular/build": "21.2.6",
     "@angular/cli": "21.2.6",
     "@angular/common": "21.2.7",
     "@angular/core": "21.2.7",