Bump graphql-java-extended-scalars in /plugins/maven/example-client (#635)

Bumps [graphql-java-extended-scalars](https://github.com/graphql-java/graphql-java-extended-scalars) from 16.0.0 to 16.0.1.
- [Release notes](https://github.com/graphql-java/graphql-java-extended-scalars/releases)
- [Commits](https://github.com/graphql-java/graphql-java-extended-scalars/commits)

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plugins/maven/example-client/pom.xml

@@ -144,7 +144,7 @@
         <dependency>
             <groupId>com.graphql-java</groupId>
             <artifactId>graphql-java-extended-scalars</artifactId>
-            <version>16.0.0</version>
+            <version>16.0.1</version>
         </dependency>