[TECH]: Bump io.freefair.lombok from 8.4 to 8.6

Bumps [io.freefair.lombok](https://github.com/freefair/gradle-plugins) from 8.4 to 8.6.
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.4...8.6)

---
updated-dependencies:
- dependency-name: io.freefair.lombok
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ springVersion = '3.2.7'
 springDependencyManagementVersion = '1.1.5'
 gitPropertiesVersion = '2.4.2'
 axionReleaseVersion = '1.17.2'
-lombokVersion = '8.4'
+lombokVersion = '8.6'
 sonarqubeVersion = '5.0.0.4638'
 
 ## Library versions