RFR: 8306329 : Update ICU4C to 73.1 [v3]

[Kevin Rushforth]

On Wed, 17 May 2023 11:47:11 GMT, Hima Bindu Meda <hmeda at openjdk.org> wrote:

>> Updated ICU to v73.1. Verified build and sanity. No issues seen.
>
> Hima Bindu Meda has updated the pull request incrementally with one additional commit since the last revision:
> 
>   update license

This looks good with one comment about a missing LICENSE section.

modules/javafx.web/src/main/native/Source/ThirdParty/icu/LICENSE line 3:

> 1: COPYRIGHT AND PERMISSION NOTICE
> 2: 
> 3: Copyright © 1991-2023 Unicode, Inc. All rights reserved.

This LICENSE file is missing the same preamble you recently added to `icu_web.md` lines 6-18. Or you can copy from:

https://github.com/unicode-org/icu/blob/release-73-1/icu4c/LICENSE

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PR Review: https://git.openjdk.org/jfx/pull/1138#pullrequestreview-1432659228
PR Review Comment: https://git.openjdk.org/jfx/pull/1138#discussion_r1197782309