Bump com.openai:openai-java from 4.14.0 to 4.15.0 (#1377)

Bumps [com.openai:openai-java](https://github.com/openai/openai-java) from 4.14.0 to 4.15.0.
- [Release notes](https://github.com/openai/openai-java/releases)
- [Changelog](https://github.com/openai/openai-java/blob/main/CHANGELOG.md)
- [Commits](openai/openai-java@v4.14.0...v4.15.0)

---
updated-dependencies:
- dependency-name: com.openai:openai-java
  dependency-version: 4.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

build.gradle

@@ -14,7 +14,7 @@ version '1.0-SNAPSHOT'
 ext {
     jooqVersion = '3.20.5'
     jacksonVersion = '2.19.1'
-    chatGPTVersion = '4.14.0'
+    chatGPTVersion = '4.15.0'
     junitVersion = '6.0.0'
 }