Bump openai from 1.3.3 to 1.26.0

Bumps [openai](https://github.com/openai/openai-python) from 1.3.3 to 1.26.0.
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v1.3.3...v1.26.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements/requirements.txt

@@ -84,7 +84,7 @@ mypy-extensions==1.0.0
     # via typing-inspect
 numpy==1.26.2
     # via langchain
-openai==1.3.3
+openai==1.26.0
     # via -r requirements/requirements.in
 packaging==23.2
     # via marshmallow
@@ -124,6 +124,7 @@ sniffio==1.3.0
     # via
     #   anyio
     #   httpx
+    #   openai
 soupsieve==2.5
     # via beautifulsoup4
 sqlalchemy==2.0.23