Pyaml-env: YAML with Environment Variable Resolution

Pyaml-env provides a straightforward way to parse YAML configuration files, automatically resolving environment variables denoted by the `!ENV` tag. It's built on top of PyYAML and is currently at version 1.2.2. The library maintains an active release cadence, with updates typically addressing bug fixes, dependency compatibility, and feature enhancements a few times a year.