Bump com.graphql-java:graphql-java-extended-scalars

Bumps [com.graphql-java:graphql-java-extended-scalars](https://github.com/graphql-java/graphql-java-extended-scalars) from 16.0.1 to 20.0.
- [Release notes](https://github.com/graphql-java/graphql-java-extended-scalars/releases)
- [Commits](https://github.com/graphql-java/graphql-java-extended-scalars/commits/20.0)

---
updated-dependencies:
- dependency-name: com.graphql-java:graphql-java-extended-scalars
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

plugins/gradle/example-server/build.gradle

@@ -17,7 +17,7 @@ dependencies {
 
     implementation "com.graphql-java-kickstart:graphql-spring-boot-starter:11.0.0"
     implementation "com.graphql-java-kickstart:graphiql-spring-boot-starter:11.0.0"
-    implementation "com.graphql-java:graphql-java-extended-scalars:16.0.1"
+    implementation "com.graphql-java:graphql-java-extended-scalars:20.0"
 
     implementation "javax.validation:validation-api:2.0.1.Final"