ScyllaDB Open Source Release 3.1.2

ScyllaDB Open Source 3.1.2 is a bugfix release that ensures backward compatibility and supports rolling upgrades for the ScyllaDB 3.1 stable branch. This release addresses several critical issues, including incorrect key types for non-frozen map virtual columns, TTLed columns returning null values shortly before expiration, and incorrect aggregated results during queries with paging and filtering. It also resolves stability concerns such as non-graceful handling of disk space limits, crashes during manual operations, and various race conditions that could lead to crashes or incorrect node behavior. For users upgrading from a fresh ScyllaDB 3.1.0 installation, enabling compatibility mode in the configuration file is necessary. Additionally, the release improves user experience by fixing errors in warning messages and issues with the setup script. Users are encouraged to report any encountered problems through the user mailing list.