Case C-195/23,  Partena: Judgment of the Court (Seventh Chamber) of 18 April 2024 (request for a preliminary ruling from the tribunal du travail francophone de Bruxelles - Belgium) – GI v Partena, Assurances sociales pour travailleurs indépendants ASBL (Reference for a preliminary ruling – Social security – Officials of the European Union – Protocol (No 7) on the privileges and immunities of the European Union – Compulsory affiliation to the social security scheme of the EU institutions – Official of the European Union pursuing a complementary professional activity as a self-employed person – Liability for social security contributions under the scheme of a Member State in which that activity is carried out)