Strict version mode

[mfussenegger]

Thanks for the great plugin, we're using it in CrateDB and it works great, but with the recent JDK 21.0.2 release we noticed that the toolchains plugin pulls the latest version, despite us having set the version to 21.0.1 and 21.0.2 had a regression that caused our tests to fail.

I assume this is intentional, due to the latest=overall option in the foojay API call:

toolchains-maven-plugin/src/main/java/org/apache/maven/plugins/toolchain/FoojayService.java

Line 139 in 3add956

+ "&latest=overall&package_type=jdk&discovery_scope_id=directly_downloadable&match=any&javafx_bundled=false&directly_downloadable=true&release_status=ga";

Would it be possible to add an option that results in latest=overall not getting set, to have strict version matching? This would allow for reproducable builds.