Update packages.json

Author: dimitri-ak

backend/packages.json

@@ -2,7 +2,7 @@
   "ManifestVersion": "2.0",
   "PlatformVersion": "3.890.0",
   "PlatformImage": "ghcr.io/virtocommerce/platform",
-  "PlatformImageTag": "3.890.0",
+  "PlatformImageTag": "3.891.0-pr-2920-c27d-vcst-3232-c27de63f",
   "PlatformAssetUrl": "",
   "ModuleSources": [
     "https://raw.githubusercontent.com/VirtoCommerce/vc-modules/master/modules_v3.json"