Regulation (EU) 2021/2259 of the European Parliament and of the Council of 15 December 2021 amending Regulation (EU) No 1286/2014 as regards the extension of the transitional arrangement for management companies, investment companies and persons advising on, or selling, units of undertakings for collective investment in transferable securities (UCITS) and non-UCITS (Text with EEA relevance)