TranslatorText isn't compatible with Ruby 3, so we need to use a
different gem.
The 'translator-text' gem response was an array of one or more objects.
Now with the 'bing_translator' gem the response is an array with one or
several translated texts.
We remove the concept of object in the code. And we also remove the
"create_response" method from the specs since it is no longer necessary
to emulate that object and we can simply use arrays with texts to emulate
the new response.
c64b49b128