RFR: 8345063: Centralize version number of the Gradle build file

[Kevin Rushforth]

On Tue, 26 Nov 2024 16:03:38 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

> Centralizes version numbers in a single place. This is not the best way of doing it in Gradle, but it's an improvement that will simplify other changes. I used the `build.properties` file because other versions are already written there.
> 
> There are other version numbers in the build file, but they are not attached directly to a dependency. Mostly libav ones. I decided not to touch them.

The changes look good. I'll do a quick CI test build before approving.

build.properties line 123:

> 121: icu.version=74.2
> 122: antlr4.version=4.7.2
> 123: lucene.version=7.7.3

Minor: Add a (single) blank line at the end of this file?

-------------

PR Review: https://git.openjdk.org/jfx/pull/1649#pullrequestreview-2462227460
PR Review Comment: https://git.openjdk.org/jfx/pull/1649#discussion_r1858943810