ci: update openai requirement (strands-agents#916)

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@v1.68.0...v1.109.0)

---
updated-dependencies:
- dependency-name: openai
  dependency-version: 1.109.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -43,7 +43,7 @@ dependencies = [
 [project.optional-dependencies]
 anthropic = ["anthropic>=0.21.0,<1.0.0"]
 gemini = ["google-genai>=1.32.0,<2.0.0"]
-litellm = ["litellm>=1.75.9,<2.0.0", "openai>=1.68.0,<1.108.0"]
+litellm = ["litellm>=1.75.9,<2.0.0", "openai>=1.68.0,<1.110.0"]
 llamaapi = ["llama-api-client>=0.1.0,<1.0.0"]
 mistral = ["mistralai>=1.8.2"]
 ollama = ["ollama>=0.4.8,<1.0.0"]