<i18n dev> RFR: 8296248: Update CLDR to Version 43.0

[Naoto Sato]

Upgrading the CLDR to [version 43](https://cldr.unicode.org/index/downloads/cldr-43). This semi-annual release is their `limited-submission` release so I would not expect regressions caused by formatting changes as we had in JDK20/CLDRv42 (https://inside.java/2023/03/28/quality-heads-up/)

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Commit messages:
 - v42 -> v43 in README, .md files
 - release-43
 - Removed sr-Latn (https://unicode-org.atlassian.net/browse/CLDR-16449)
 - release-43-beta5
 - release-43-beta4
 - release-43-beta3
 - release-43-beta1
 - release-43-beta0
 - Fixing IncludeLocalesPluginTest.java not to include below `basic` locales
 - release-43-alpha2
 - ... and 5 more: https://git.openjdk.org/jdk/compare/92521b10...d61ccf0f

Changes: https://git.openjdk.org/jdk/pull/13469/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13469&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296248
  Stats: 209680 lines in 1036 files changed: 199351 ins; 2906 del; 7423 mod
  Patch: https://git.openjdk.org/jdk/pull/13469.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13469/head:pull/13469

PR: https://git.openjdk.org/jdk/pull/13469