Missing GPT_IMAGE_1_5 Model in Tool.kt

[dcovarrubias-vividseats]

I am trying to use gpt-image-1.5 model for the ImageGeneration Tool but it was not added to the enum here:

https://github.com/openai/openai-java/blob/main/openai-java-core/src/main/kotlin/com/openai/models/responses/Tool.kt#L4867