Bump org.projectlombok:lombok in /plugins/gradle/example-server

---
updated-dependencies:
- dependency-name: org.projectlombok:lombok
  dependency-version: 1.18.38
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

plugins/gradle/example-server/build.gradle

@@ -21,8 +21,8 @@ dependencies {
 
     implementation "javax.validation:validation-api:2.0.1.Final"
 
-    compileOnly "org.projectlombok:lombok:1.18.30"
-    annotationProcessor "org.projectlombok:lombok:1.18.30"
+    compileOnly "org.projectlombok:lombok:1.18.38"
+    annotationProcessor "org.projectlombok:lombok:1.18.38"
 
     implementation 'org.projectlombok:lombok-mapstruct-binding:0.2.0'