This new major release adds support for PHP_CodeSniffer 3.x. Since PHP_CodeSniffer 2.x has been deprecated, there will be no further development on the 8.x-2.x branch.
For each media, we have to check if the media still pass the converter's conditions.
Before, we used to create a query to get the medias imported by the given converter. But it is not efficient, since it is possible that a media that has been created by a given converter does not pass the converter conditions anymore (for example, if an attribute's value has changed since the media creation).