Bump Lombok to 1.18.30+ to for Java 21 compatibility

[schivmeister]

Trying to build the project now yields the following error:

Fatal error compiling: java.lang.NoSuchFieldError: Class com.sun.tools.javac.tree.JCTree$JCImport does not have member field 'com.sun.tools.javac.tree.JCTree qualid' -> [Help 1]

The fix is to upgrade Lombok to 1.18.30 or later, e.g. the latest 1.18.38:

<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.38</version>
  <scope>provided</scope>
</dependency>

[jimkont]

Thanks for the report. I pushed a fix for this, but for full Java 21 compatibility, it will probably require a bit more work. Let me know if there is another easy fix I can apply, or feel free to submit a PR