Bump orjson from 3.8.10 to 3.9.15

Bumps [orjson](https://github.com/ijl/orjson) from 3.8.10 to 3.9.15.
- [Release notes](https://github.com/ijl/orjson/releases)
- [Changelog](https://github.com/ijl/orjson/blob/master/CHANGELOG.md)
- [Commits](ijl/orjson@3.8.10...3.9.15)

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

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

Author: dependabot[bot]

requirements.txt

@@ -110,7 +110,7 @@ numpy==1.24.3
 oauthlib==3.2.2
 openai==0.27.2
 openapi-python-client==0.13.4
-orjson==3.8.10
+orjson==3.9.15
 outcome==1.2.0
 packaging==23.1
 pandas==2.0.1