Version 2021.2

Upstream version 2021b released 2021-09-24T23:23:00+00:00

Briefly:

This is an intermediate release that cherry-picks only the changes to Jordan and
Samoa's DST. It will not match upstream 2021b, which includes many other
changes.

Changes to future timestamps

Jordan now starts DST on February's last Thursday. (Thanks to Steffen Thorsen.)

Samoa no longer observes DST. (Thanks to Geoffrey D. Bennett.)