Bump lombok from 1.18.18 to 1.18.20 in /plugins/gradle/example-server (#619)

* Add ability to generate particular types as Java interfaces #606 (#610)

* Gradle 6.8.3.

* Added typesAsInterfaces config option.

* Updated doc.

* Basic implementation for generating type as interface.

* Tests for generating type as interface.

* Code style fixes.

* Code style fixes.

* Java 1.8 build fixes.

* Code style fixes.

* Code style fixes.

* Attempt to fix compilation.

* Code review fixes.

* Revert "Add ability to generate particular types as Java interfaces #606 (#610)" (#613)

This reverts commit 994f6fe.

* Bump lombok from 1.18.18 to 1.18.20 in /plugins/gradle/example-server

Bumps [lombok](https://github.com/rzwitserloot/lombok) from 1.18.18 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@v1.18.18...v1.18.20)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: Alexey Zhokhov <alexey@zhokhov.com>
Co-authored-by: Bogdan Kobylynskyi <92bogdan@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: 3 people

plugins/gradle/example-server/build.gradle

@@ -24,8 +24,8 @@ dependencies {
     implementation "org.mapstruct:mapstruct:1.4.2.Final"
     annotationProcessor "org.mapstruct:mapstruct-processor:1.4.2.Final"
 
-    compileOnly "org.projectlombok:lombok:1.18.18"
-    annotationProcessor "org.projectlombok:lombok:1.18.12"
+    compileOnly "org.projectlombok:lombok:1.18.20"
+    annotationProcessor "org.projectlombok:lombok:1.18.20"
 }
 
 compileJava.dependsOn "graphqlCodegen"