com.openai.unity 2.2.5

What's Changed

• Renamed CreateImageVariationAsync parameter imagePath -> texture
• Add param description in the documentation that the texture should
  have read/write enabled and compression set to none.
• Updated docs with Texture2D example

Special thanks to @EvanCrabtree for submitting these changes.

Full Changelog: 2.2.4...2.2.5