build: bump openai from 1.65.2 to 1.70.0

Bumps [openai](https://github.com/openai/openai-python) from 1.65.2 to 1.70.0.
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v1.65.2...v1.70.0)

---
updated-dependencies:
- dependency-name: openai
  dependency-version: 1.70.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/requirements.txt

@@ -1,6 +1,6 @@
 azure-identity==1.20.0
 # Flask[async]==2.3.2
-openai==1.65.2
+openai==1.73.0
 azure-search-documents==11.6.0b9
 azure-storage-blob==12.25.1
 python-dotenv==1.1.0