This update for timezone fixes the following issues:

- timezone update 2020a. (bsc#1169582)
* Morocco springs forward on 2020-05-31, not 2020-05-24.
* Canada's Yukon advanced to -07 year-round on 2020-03-08.
* America/Nuuk renamed from America/Godthab.
* zic now supports expiration dates for leap second lists.

This update was imported from the SUSE:SLE-15:Update update project.