Updated tk-framework-adminui to v0.7.4

Release notes: https://github.com/shotgunsoftware/tk-framework-adminui/wiki/Release-Notes#v074

Author: toolkitty

env/includes/common/frameworks.yml

@@ -34,7 +34,7 @@ frameworks:
       name: tk-framework-shotgunutils
   tk-framework-adminui_v0.x.x:
     location:
-      version: v0.7.3
+      version: v0.7.4
       type: app_store
       name: tk-framework-adminui
   tk-framework-widget_v1.x.x: