Update workspace.ts

Author: neSpecc

src/typeDefs/workspace.ts

@@ -122,6 +122,11 @@ export default gql`
     """ True if workspace is blocked """
     isBlocked: Boolean
 
+    """
+    For prepaid workspaces, date when the workspace is paid until
+    """
+    paidUntil: DateTime
+
     """
     Workspace projects array
     """