Introduce javaparserVersion option to Cleanthat

[blacelle]

Hi!

Small change over Cleanthat integration, enabling customization of Javaparser version over the one brought transitively by Cleanthat. It's helpful as a bunch of bugs in Cleanthat are actual fixed by only upgrading javaparser (e.g. covering recent JDK syntax).

I also upgrade the baseline to 2.25.

[blacelle]

@nedtwigg I see the JDK matrix runs JDK24. I guess we should rather run JDK25, and potentially JDK26.

[nedtwigg]

Feel free to make that change within this PR if it is helpful to you.

[blacelle]

@nedtwigg I see many failures, only on gradle side. One of them:

• https://github.com/diffplug/spotless/actions/runs/24737312910/job/72367953871?pr=2903

Execution failed for task ':lib:spotbugsMain'.
> Task :lib:spotbugsTestCompatKtLint1Dot0Dot0
> A failure occurred while executing com.github.spotbugs.snom.internal.SpotBugsRunnerForHybrid$SpotBugsExecutor
   > Verification failed: SpotBugs ended with exit code 1. See the report at: file:///home/runner/work/spotless/spotless/lib/build/reports/spotbugs/main.html

Locally, I see stuff related with Cleanthat on some deprecation notices, but nothing new:

main is green, but we can see similar deprecation notice: https://github.com/diffplug/spotless/actions/runs/24608470721/job/72039556017

What am I missing?

[blacelle]

Ha, it was explained in the other report: