Update dependency tzdata to v2025.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tzdata	==2025.1 -> ==2025.2

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Release Notes

python/tzdata (tzdata)

v2025.2: : Release of upstream tzdata 2025b

Compare Source

Version 2025.2

Upstream version 2025b released 2025-03-22T20:40:46+00:00

Briefly:

New zone for Aysén Region in Chile which moves from -04/-03 to -03.

Changes to future timestamps

Chile's Aysén Region moves from -04/-03 to -03 year-round, joining Magallanes
Region. The region will not change its clocks on 2025-04-05 at 24:00, diverging
from America/Santiago and creating a new zone America/Coyhaique. (Thanks to
Yonathan Dossow.) Model this as a change to standard offset effective
2025-03-20.

Changes to past timestamps

Iran switched from +04 to +0330 on 1978-11-10 at 24:00, not at year end.
(Thanks to Roozbeh Pournader.)

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