Migrate from javax to jakarta

[yamass]

People are more and more migrating to the newer EE versions (Jakarta). Jetty 11 has been out for more than a year and depends on jakarta. Spring 6 (release data: Q4 2022) will depend on jakarta. https://spring.io/blog/2021/09/02/a-java-17-and-jakarta-ee-9-baseline-for-spring-framework-6

I suggest you introduce two versions of gitlab4j-api: One depending on javax and one on jakarta, maybe on two different branches.