VSS CI job is failing

[tnull]

Seems a new gradle version released and broke our CI job:

openjdk version "17.0.15" 2025-04-15 LTS
OpenJDK Runtime Environment Corretto-17.0.15.6.1 (build 17.0.15+6-LTS)
OpenJDK 64-Bit Server VM Corretto-17.0.15.6.1 (build 17.0.15+6-LTS, mixed mode, sharing)

Welcome to Gradle 9.0.0-rc-1!

Here are the highlights of this release:
 - Configuration Cache is the recommended execution mode
 - Gradle now requires JVM 17 or higher to run
 - Build scripts use Kotlin 2.1 and Groovy 4.0
 - Improved Kotlin DSL build script compilation avoidance

For more details see https://docs.gradle.org/9.0.0-rc-1/release-notes.html


------------------------------------------------------------
Gradle 9.0.0-rc-1
------------------------------------------------------------

Build time:    [20](https://github.com/lightningdevkit/ldk-node/actions/runs/15756762670/job/44413819861?pr=580#step:9:21)25-06-18 07:53:24 UTC
Revision:      8493ac58b4a7baddb64080d415b11659be78dbea

Kotlin:        2.1.[21](https://github.com/lightningdevkit/ldk-node/actions/runs/15756762670/job/44413819861?pr=580#step:9:22)
Groovy:        4.0.27
Ant:           Apache Ant(TM) version 1.10.15 compiled on August 25 2024
Launcher JVM:  17.0.15 (Amazon.com Inc. 17.0.15+6-LTS)
Daemon JVM:    /opt/hostedtoolcache/Java_Corretto_jdk/17.0.15-6.1/x64 (no JDK specified, using current Java home)
OS:            Linux 6.11.0-1015-azure amd64

Starting a Gradle Daemon (subsequent builds will be faster)

[Incubating] Problems report is available at: file:///home/runner/work/ldk-node/ldk-node/vss-server/java/build/reports/problems/problems-report.html

FAILURE: Build failed with an exception.

* Where:
Build file '/home/runner/work/ldk-node/ldk-node/vss-server/java/app/build.gradle' line: 100

* What went wrong:
A problem occurred evaluating project ':app'.
> org/gradle/api/plugins/JavaPluginConvention

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to generate a Build Scan (Powered by Develocity).
> Get more help at https://help.gradle.org.

BUILD FAILED in 12s

Deprecated Gradle features were used in this build, making it incompatible with Gradle 10.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/9.0.0-rc-1/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.
Consider enabling configuration cache to speed up this build: https://docs.gradle.org/9.0.0-rc-1/userguide/configuration_cache_enabling.html
Error: Process completed with exit code 1.