OpenSearch 2.12.0 fails to deploy

OpenSearch just released a new minor version - 2.12.0 - that is failing to deploy.

Task is to investigate.

Workaround

This will be addressed in the next GET release. In the meantime this can be worked around by by setting opensearch_version in the Ansible vars.yml file to 2.11.1. Additionally if using the latest GET 3.1.1 release this can be set via the OPENSEARCH_VERSION environmental variable.