user param doesn't work

[OlegYch]

using ackcord.interactions.commands.SlashCommandControllerBase#user in 0.18.0-SNAPSHOT i get "This interaction failed"
looks like ackcord.data.ApplicationCommandOptionTypeE#userRegex is wrong as it appears to be just a string:

      "options" : [                         
        {                                   
          "value" : "844577457944133652",   
          "type" : 6,                       
          "name" : "username"               
        }                                 
      ],