Bump lombok from 1.18.26 to 1.18.28 (#34)

Bumps [lombok](https://github.com/projectlombok/lombok) from 1.18.26 to 1.18.28.
- [Release notes](https://github.com/projectlombok/lombok/releases)
- [Changelog](https://github.com/projectlombok/lombok/blob/master/doc/changelog.markdown)
- [Commits](projectlombok/lombok@v1.18.26...v1.18.28)

---
updated-dependencies:
- dependency-name: org.projectlombok:lombok
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -29,7 +29,7 @@
     <main.java.package>gr.cti.nts</main.java.package>
     <keycloak.version>18.0.0</keycloak.version>
     <junit.version>4.13.2</junit.version>
-    <lombok.version>1.18.26</lombok.version>
+    <lombok.version>1.18.28</lombok.version>
     <auto-service.version>1.0.1</auto-service.version>
   </properties>