[Notifier] Make `TransportTestCase` data providers static (6.2)#49389

alexandre-daubois wants to merge 1 commit intosymfony:6.2symfony/symfony:6.2from

alexandre-daubois:62-bc-notifier-static-data-providersalexandre-daubois/symfony:62-bc-notifier-static-data-providersCopy head branch name to clipboard