Bump Lombok version to allow building with a JDK12>=12
Fixes
### Motivation
I would like to be able to build Pulsar with at least JDK12.
### Modifications
Bumping lombok dep.
### Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
@@ -1056,7 +1056,7 @@ flexible messaging model and an intuitive client API.</description>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
- <version>1.18.4</version>
+ <version>1.18.10</version>
</dependency>
<dependency>
