[Symfony 5] The "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\MimeTypes" instead.

Problem/Motivation

Resolve the following SF4 Deprecations if possible:

'The "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\MimeTypes" instead.'

'The "Drupal\Core\File\MimeType\MimeTypeGuesser" class implements "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface" that is deprecated since Symfony 4.3, use {@link MimeTypesInterface} instead.'

'The "Symfony\Component\HttpFoundation\File\MimeType\FileBinaryMimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\FileBinaryMimeTypeGuesser" instead.'

'The "Symfony\Component\HttpFoundation\File\MimeType\FileinfoMimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\FileinfoMimeTypeGuesser" instead.'

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet