Yaml Update Strategy
Default UpdateStrategy implementation for YAML configuration files.
This strategy updates an existing YAML configuration file by merging it with the default configuration resource, preserving user-defined values while adding new keys or updating missing entries.
It uses org.snakeyaml.engine.v2 to parse and manipulate the YAML AST, allowing structural merging while keeping comments intact at the root level.
Typically used internally by the YAML parser module.