Replaced class ...\MimeTypeGuesser by interface ...\MimeTypeGuesserInterface
requested to merge issue/search_api_attachments-3213815:3213815-fatal-error-extractfilevalidatorconstruct into 9.0.x
Replaced class \Drupal\Core\File\MimeType\MimeTypeGuesser by \Symfony\Component\Mime\MimeTypeGuesserInterface
Closes #3213815