Case T-389/21: Judgment of the General Court of 20 December 2023 — Landesbank Baden-Württemberg v Single Resolution Board (SRB) (Economic and monetary union — Banking union — Single Resolution Mechanism for credit institutions and certain investment firms (SRM) — Single Resolution Fund (SRF) — Decision of the SRB on the calculation of the 2021 ex ante contributions — Duty to state reasons — Effective judicial protection — Equal treatment — Principle of proportionality — SRB’s discretion — Plea of illegality — Commission’s discretion — Limitation of the temporal effects of the judgment)