Bump io.freefair.lombok from 8.3 to 8.4 (#37)

Bumps [io.freefair.lombok](https://github.com/freefair/gradle-plugins) from 8.3 to 8.4.
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.3...8.4)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle.kts

@@ -12,7 +12,7 @@ plugins {
     id("com.github.spotbugs") version "5.1.3"
     id("net.ltgt.errorprone") version "3.1.0"
     id("maven-publish")
-    id("io.freefair.lombok") version "8.3"
+    id("io.freefair.lombok") version "8.4"
     id("com.github.ben-manes.versions") version "0.48.0"
 }