Bump io.freefair.lombok from 8.14.2 to 9.1.0 in /service (#378)

Bumps [io.freefair.lombok](https://github.com/freefair/gradle-plugins) from 8.14.2 to 9.1.0.
- [Release notes](https://github.com/freefair/gradle-plugins/releases)
- [Commits](freefair/gradle-plugins@8.14.2...9.1.0)

---
updated-dependencies:
- dependency-name: io.freefair.lombok
  dependency-version: 9.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

service/build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'java'
     id 'org.springframework.boot' version '3.5.6'
     id 'io.spring.dependency-management' version '1.1.7'
-    id "io.freefair.lombok" version "8.14.2"
+    id "io.freefair.lombok" version "9.1.0"
     id "checkstyle"
     id "com.github.spotbugs" version "6.1.13"
     id "jacoco"