RFR: 8341164: Update boot JDK to 23

[Kevin Rushforth]

On Wed, 2 Oct 2024 18:52:36 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

> Gradle should be upgraded with the `wrapper` task (see [Upgrading your build from Gradle 8.x to the latest](https://docs.gradle.org/current/userguide/upgrading_version_8.html)):
> 
> ```
> gradle wrapper --gradle-version 8.10.2
> ```

That's generally safest, and is what we do for updating to a major version.

> Doing this will ensure that `gradlew` and `gradlew.bat` are up-to-date with the latest version, which is not the case for this PR.

@arapte Can you check to see if there are any substantive differences this time? I wouldn't expect any for a dot release, but you never know.

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PR Comment: https://git.openjdk.org/jfx/pull/1589#issuecomment-2389960904