Commission Implementing Regulation (EU) 2020/2116 of 16 December 2020 concerning the renewal of the authorisation of L-histidine monohydrochloride monohydrate produced by Escherichia coli ATCC 9637 as a feed additive for salmonids and its extension of use to other finfish, and repealing Regulation (EC) No 244/2007 (Text with EEA relevance)