Update openai requirement from ==1.51.* to ==1.56.* in /docker/main

Updates the requirements on [openai](https://github.com/openai/openai-python) to permit the latest version.
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v1.51.0...v1.56.0)

---
updated-dependencies:
- dependency-name: openai
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

docker/main/requirements-wheels.txt

@@ -41,7 +41,7 @@ transformers == 4.45.*
 # Generative AI
 google-generativeai == 0.8.*
 ollama == 0.3.*
-openai == 1.51.*
+openai == 1.56.*
 # push notifications
 py-vapid == 1.9.*
 pywebpush == 2.0.*