[Mailer] [Sendinblue] refacto sendinblue to brevo#50279

PEtanguy wants to merge 2 commits intosymfony:6.3symfony/symfony:6.3from

PEtanguy:refacto_sendinblue_to_brevoPEtanguy/symfony:refacto_sendinblue_to_brevoCopy head branch name to clipboard