[Buildroot] [PATCH v1] package/tzdata: bump version to 2021a

[Peter Korsgaard]

>>>>> "Peter" == Peter Seiderer <ps.report at gmx.net> writes:

 > For details see [1].
 > [1] https://mm.icann.org/pipermail/tz-announce/2021-January/000065.html

 > Signed-off-by: Peter Seiderer <ps.report at gmx.net>

Committed to 2020.02.x, 2020.11.x and 2021.02.x, thanks.

-- 
Bye, Peter Korsgaard