Restrict artifact versions with gradle versions plugin

When using the Gradle Versions Plugin I sometimes want to cap/restrict versions because things do not line up properly.

E.g. with a (currently) stable Vaadin v23 project I want to stick with Springboot 2.7 (not 3.0, as this brings all the jakarta shenanigans). So you can use rejectVersionIf and look into the designated versions.

tasks.named('dependencyUpdates').configure {
    rejectVersionIf {
        // stick with Springboot 2.X until Vaadin also switches to Jakarta-packages"org.springframework.boot" && !it.candidate.version.startsWith("2.")

Sadly we don't have better means to check the versions. Doing versions via strings feels a little bit like banging stones together to make fire.