Joined Cases C-584/20 P and C-621/20 P: Judgment of the Court (Grand Chamber) of 15 July 2021 — European Commission v Landesbank Baden-Württemberg (C-584/20 P), Single Resolution Board v Landesbank Baden-Württemberg (C-621/20 P) (Appeal — Banking union — Single Resolution Mechanism (SRM) — Single Resolution Fund (SRF) — Calculation of the 2017 ex ante contributions — Authentication of a decision of the Single Resolution Board (SRB) — Obligation to state reasons — Confidential data — Legality of Delegated Regulation (EU) 2015/63)