Logback dependency

[fcv]

As per version 3.1.1 keycloak4s-core depends on logback, which forces it as a transitive dependency to any project using keycloak4s.

Would it be possible to change keycloak4s-core so it depends on slf4j instead making it easier for whoever is using keycloak4s to choose which log framework to use?

Ps.: nowadays I'm using something like exclude("ch.qos.logback", "logback-classic") to prevent bringing logback to the classpath