#233 - Update to OGM 2.1.
#233 - Update to OGM 2.1.

Required to make sure the current snapshots see the latest API changes.
goodjwon/spring-data-examples,spring-projects/spring-data-examples,thomasdarimont/spring-data-examples,goodjwon/spring-data-examples,thomasdarimont/spring-data-examples,spring-projects/spring-data-examples,goodjwon/spring-data-examples,spring-projects/spring-data-examples