Add runtime: false to dialyxir dependency

[janpieper]

dialyxir is meant to be used with runtime: false like shown in their README. Otherwise you get this error:

Warning: the `dialyxir` application's start function was called, which likely means you                                                                                                                              
did not add the dependency with the `runtime: false` flag. This is not recommended because                                                                                                                           
it will mean that unnecessary applications are started, and unnecessary applications are most                                                                                                                        
likely being added to your PLT file, increasing build time.                                                                                                                                                          
Please add `runtime: false` in your `mix.exs` dependency section e.g.:                                                                                                                                               
{:dialyxir, "~> 0.5", only: [:dev], runtime: false}

[RobertDober]

Thank you I guess I will release to get rid of the warning. ❤️

[RobertDober]

Thank you I guess I will release to get rid of the warning...

Released v1.4.40