chore(deps): bump openai in /api/terraform/python/layer_openai

Bumps [openai](https://github.com/openai/openai-python) from 2.6.1 to 2.8.1.
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v2.6.1...v2.8.1)

---
updated-dependencies:
- dependency-name: openai
  dependency-version: 2.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

api/terraform/python/layer_openai/requirements.txt

@@ -10,7 +10,7 @@
 
 # generative AI requirements
 # --------------------------
-openai==2.6.1
+openai==2.8.1
 
 # general requirements
 # --------------------------