Fix phpcs/phpstan warnings.

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phpcs

FILE: src/Form/WebformJiraConfigurationForm.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 362 | ERROR | Description for the @return value is missing (Drupal.Commenting.FunctionComment.MissingReturnComment)

phpstan

  Line   src/Form/JiraServiceDeskConfigurationForm.php                         
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  60     Method Drupal\Core\Form\ConfigFormBase::__construct() invoked with 1  
         parameter, 2 required.                                                
         🪪  arguments.count                                                   
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  Line   src/Form/WebformJiraConfigurationForm.php                             
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  324    \Drupal calls should be avoided in classes, use dependency injection  
         instead                                                               
         🪪  globalDrupalDependencyInjection.useDependencyInjection            
  339    \Drupal calls should be avoided in classes, use dependency injection  
         instead                                                               
         🪪  globalDrupalDependencyInjection.useDependencyInjection            
  365    \Drupal calls should be avoided in classes, use dependency injection  
         instead                                                               
         🪪  globalDrupalDependencyInjection.useDependencyInjection            
 ------ ---------------------------------------------------------------------- 
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  Line   src/Form/WebformJiraFieldForm.php                                      
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  227    Method                                                                 
         Drupal\webform_jira_service_desk\Form\WebformJiraFieldForm::save()     
         should return int but return statement is missing.                     
         🪪  return.missing                                                     
  243    \Drupal calls should be avoided in classes, use dependency injection   
         instead                                                                
         🪪  globalDrupalDependencyInjection.useDependencyInjection             
  339    Method                                                                 
         Drupal\webform_jira_service_desk\Form\WebformJiraFieldForm::getJiraTy  
         pe() should return string but return statement is missing.             
         🪪  return.missing                                                     
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  Line   src/JiraServiceDeskService.php                                         
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  132    Method                                                                 
         Drupal\webform_jira_service_desk\JiraServiceDeskService::getAvailable  
         ServiceDesks() should return array but return statement is missing.    
         🪪  return.missing                                                     
  162    Method                                                                 
         Drupal\webform_jira_service_desk\JiraServiceDeskService::getAvailable  
         RequestTypes() should return array but return statement is missing.    
         🪪  return.missing                                                     
 ------ ----------------------------------------------------------------------- 
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  Line   src/Plugin/QueueWorker/SendJiraRequest.php                            
 ------ ---------------------------------------------------------------------- 
  94     \Drupal calls should be avoided in classes, use dependency injection  
         instead                                                               
         🪪  globalDrupalDependencyInjection.useDependencyInjection            
 ------ ----------------------------------------------------------------------