The Gradle v9 is still not there yet, but we are already facing a few warnings when running simple commands like spotless and tests.

To avoid being blocked, as happened during the CI transition, it would be nice to fix the warnings before the release of Gradle v9 so we can stay up to date.

This involves fixing some code, and maybe suppressing other optional warnings that may evolve a lot of work to be done.

https://gradle.org/whats-new/gradle-9/

Here is the gradle report when I run ./gradlew build integrationTest