Java 11 or Java 21 required?

[oliviercailloux]

When switching my dependency from ch.qos.logback:logback-classic:1.4.14 to (next) version 1.5.0 (or to 1.5.2), vscode tells me: “Incompatible .class files version in required binaries. Project […] is targeting a 17 runtime, but is compiled against '[…]/.m2/repository/ch/qos/logback/logback-core/1.5.0/logback-core-1.5.0.jar' (from the container 'Maven Dependencies') which requires a 21 runtime”.

Indeed, it seems that logback-core is compiled for Java 21.

Is the intent that when depending on logback 1.5.x, I should use Java 21? The doc says otherwise.

[mrdziuban]

This also seems related to why all the GitHub Actions builds are failing -- the build is setup to use java 11 and 17