Bump lombok from 1.18.12 to 1.18.18 in /plugins/maven/example-server (#505)

Bumps [lombok](https://github.com/rzwitserloot/lombok) from 1.18.12 to 1.18.18.
- [Release notes](https://github.com/rzwitserloot/lombok/releases)
- [Changelog](https://github.com/rzwitserloot/lombok/blob/master/doc/changelog.markdown)
- [Commits](https://github.com/rzwitserloot/lombok/compare/v1.18.12...v1.18.18)
Signed-off-by: Ndependabot[bot] <support@github.com>
Co-authored-by: Ndependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

plugins/maven/example-server/pom.xml

@@ -112,7 +112,7 @@
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>1.18.12</version>
+            <version>1.18.18</version>
         </dependency>
     </dependencies>