[Composer] Bumped assets version

Author: ibexa-yuna

composer.json

@@ -11,7 +11,7 @@
         "ibexa/doctrine-schema": "~5.0.x-dev",
         "ibexa/system-info": "~5.0.x-dev",
         "ibexa/admin-ui": "~5.0.x-dev",
-        "ibexa/admin-ui-assets": "~4.6.0@alpha",
+        "ibexa/admin-ui-assets": "~5.0.0@alpha",
         "ibexa/content-forms": "~5.0.x-dev",
         "ibexa/core": "~5.0.x-dev",
         "ibexa/core-persistence": "~5.0.x-dev",