Bump lombok from 1.18.16 to 1.18.20 in /examples (#3956)

Bumps [lombok](https://github.com/rzwitserloot/lombok) from 1.18.16 to 1.18.20.
- [Release notes](https://github.com/rzwitserloot/lombok/releases)
- [Changelog](https://github.com/rzwitserloot/lombok/blob/master/doc/changelog.markdown)
- [Commits](projectlombok/lombok@v1.18.16...v1.18.20)

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

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

Author: dependabot[bot]

examples/disque-job-queue/build.gradle

@@ -7,8 +7,8 @@ repositories {
 }
 
 dependencies {
-    compileOnly "org.projectlombok:lombok:1.18.16"
-    annotationProcessor "org.projectlombok:lombok:1.18.14"
+    compileOnly "org.projectlombok:lombok:1.18.20"
+    annotationProcessor "org.projectlombok:lombok:1.18.20"
     implementation 'biz.paluch.redis:spinach:0.3'
     implementation 'com.google.code.gson:gson:2.8.6'
     implementation 'com.google.guava:guava:23.0'

examples/kafka-cluster/build.gradle

@@ -7,7 +7,7 @@ repositories {
 }
 
 dependencies {
-    testCompileOnly "org.projectlombok:lombok:1.18.10"
+    testCompileOnly "org.projectlombok:lombok:1.18.20"
     testAnnotationProcessor "org.projectlombok:lombok:1.18.10"
     testCompile 'org.testcontainers:kafka'
     testCompile 'org.apache.kafka:kafka-clients:2.3.1'

examples/solr-container/build.gradle

@@ -7,7 +7,7 @@ repositories {
 }
 
 dependencies {
-    compileOnly "org.projectlombok:lombok:1.18.16"
+    compileOnly "org.projectlombok:lombok:1.18.20"
     annotationProcessor "org.projectlombok:lombok:1.18.16"
 
     implementation 'org.apache.solr:solr-solrj:8.7.0'