tzdata bug fix and enhancement update

The tzdata packages contain data files with rules for various time zones.

The tzdata packages have been updated to version 2021e, which addresses recent
time zone changes. Notably:

* The Pacific/Fiji timezone has suspended daylight saving time (DST) for the 2021/2022 season.

* The 'zic -r' command now marks unspecified timestamps with "-00".

* Palestine will end daylight saving time (DST) on October 29, 2021 at 01:00, rather than the predicted October 30, 2021.

(BZ#2015242, BZ#2015246, BZ#2016369)