Update plugin io.freefair.lombok to v8.6 (#35)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

settings.gradle.kts

@@ -5,7 +5,7 @@ pluginManagement {
         id("java")
         id("io.micronaut.library").version("4.4.0")
         id("io.micronaut.application").version("4.4.0")
-        id("io.freefair.lombok").version("8.4")
+        id("io.freefair.lombok").version("8.6")
         id("org.sonarqube").version("4.4.1.3373")
 
         id("signing")