Update Generators to be compatible with chi-teck/drupal-code-generator 4.x

@niharika.s Thank you for trying to help here!
Sadly, updating the info.yml file was not what was expected here. For these changes, the appropriate location is 📌 Automated Drupal 11 compatibility fixes for extra_field Needs review .

@duaelfr thanks for correcting my mistake.

Could someone explain why we need this package in require-dev?

@pcambra Yes, of course!
@chi-teck/drupal-code-generator@ is the package that provides all the Generator related stuff to Drush. The generator classes provided by the Extra Field module extends @DrupalCodeGenerator\Command\BaseGenerator@ so when static tests are running we need to tell Gitlab CI to download this dependency to prevent code analysis to consider that these classes does not exist.

I think this was included in 📌 Drush 13 compatibility Active , thanks!