Why is the opensearchVersion for opensearch-java/java-client set to 2.12.0?

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser): 2.18.0

Describe the issue:
In the project opensearch-java/java-client, regardless of the version, the opensearchVersion is set to 2.12.0. Shouldn’t this be set to the same version as the opensearch-java version we checked out?
This is the line I’m referring to:

Configuration:

Relevant Logs or Screenshots: