SOAR v2.1.0 released - RDS autoremediation improvements

[PeterBengtson]

Version 2.1.0 of the SOAR repository is available with improvements mainly in the RDS autoremediations area, especially those autoremediations that set up logging of Postgres DBs and also the replication of such logs to the Log Archive account:

• Added Lambda Layers for shared code (aws_utils and rds_remediation) to centralize cross-account functionality
• Reorganized all RDS autoremediations to leverage common code from the rds_remediation layer
• Fixed RDS.2 autoremediation to properly handle DB instances within Aurora clusters
• Fixed capitalization in RDS.9 and RDS.2 autoremediations to handle Security Hub ASFF format correctly
• Fixed access to parameter group fields using 'DbParameterGroups' instead of 'DBParameterGroups'
• Fixed access to cluster parameter group fields using 'DbClusterParameterGroups' instead of 'DBClusterParameterGroups'
• Enhanced RDS.9 autoremediation to handle DB cluster findings more reliably with API-based fallbacks
• Improved error handling in RDS.9 parameter group creation to prevent duplicate name conflicts
• Added unique suffix generation for RDS parameter group names to avoid name collisions
• Thoroughly tested RDS.9 autoremediation with PostgreSQL and Aurora PostgreSQL instances (standalone and in clusters)

Full details here, including code deltas: https://github.com/OpenSecOps-Org/SOAR/releases