Update request: update IANA DB to 2024b

[driver-by]

Which package?

intl-datetimeformat

Describe the bug

IANA has published a new tzdata release. No big changes, but good to have the actual version.

Release 2024b (2024-09-04)

This release is prompted by the accumulated weight of many non-urgent
changes to both code and data. It changes one timestamp abbreviation,
for the long-obsolete System V setting TZ='MET'; see below.
Otherwise, the timestamps affected by this release all predate April
2008, so you can skip this release if your application uses only
tzdata and does not use older timestamps.

This release contains the following changes:

Briefly:
Improve historical data for Mexico, Mongolia, and Portugal.
System V names are now obsolescent.
The main data form now uses %z.
The code now conforms to RFC 8536 for early timestamps.
Support POSIX.1-2024, which removes asctime_r and ctime_r.
Assume POSIX.2-1992 or later for shell scripts.
SUPPORT_C89 now defaults to 1.