message: Acknowledge community contribution in CHANGELOG
diff: ### Other Changes
  +### Acknowledgments
  +
  +Thank you to our developer community members who helped to make Azure Core better with their contributions to this release:
  +
  +- ariellink _([GitHub](https://github.com/Ariellink))_
  +
  ## 12.3.0 (2022-10-11)
  ### Features Added
  