Update plugin io.freefair.lombok to v9 (#567)

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

Author: renovate[bot]

build.gradle

@@ -10,7 +10,7 @@ plugins {
   id 'uk.gov.hmcts.java' version '0.12.67'
   id 'com.github.ben-manes.versions' version '0.53.0'
   id 'org.sonarqube' version '6.3.1.5724'
-  id 'io.freefair.lombok' version '8.14.2'
+  id 'io.freefair.lombok' version '9.0.0'
   id 'info.solidsoft.pitest' version '1.19.0-rc.1'
   id 'net.serenity-bdd.serenity-gradle-plugin' version '4.1.14'
   id 'au.com.dius.pact' version '4.6.17'