[jdk24u] RFR: 8347965: (tz) Update Timezone Data to 2025a

[Johny Jose]

tz2025a changes

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Commit messages:
 - Backport caa3c78f7837b1f561740184bd8f9cb671c467eb

Changes: https://git.openjdk.org/jdk24u/pull/30/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk24u&pr=30&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8347965
  Stats: 247 lines in 12 files changed: 150 ins; 50 del; 47 mod
  Patch: https://git.openjdk.org/jdk24u/pull/30.diff
  Fetch: git fetch https://git.openjdk.org/jdk24u.git pull/30/head:pull/30

PR: https://git.openjdk.org/jdk24u/pull/30