build(deps): bump io.freefair.lombok from 8.11 to 8.12 (#514)

Author: dependabot[bot]

build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'java'
     id 'application'
     id 'idea'
-    id "io.freefair.lombok" version '8.11'
+    id "io.freefair.lombok" version '8.12'
     // https://github.com/qoomon/gradle-git-versioning-plugin
     id 'me.qoomon.git-versioning' version '6.4.4'
     // https://github.com/itzg/github-releaser-gradle-plugin