Release v1.15.9

1.15.9 (2023-08-04)

Build Systems

• Update aws-java-sdk-dynamodb, ... from 1.12.521 to 1.12.522 (ece2fe8)
• Update scalafmt-core from 3.7.11 to 3.7.12 (0b7cb06)
• Update zookeeper from 3.8.2 to 3.9.0 (84e5238)