Bump orjson from 3.9.7 to 3.9.15

Bumps [orjson](https://github.com/ijl/orjson) from 3.9.7 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@3.9.7...3.9.15)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements-dev.txt

@@ -14,7 +14,7 @@ sphinx-sitemap==2.5.1
 sphinxemoji==0.2.0
 flake8==6.1.0
 python-dateutil==2.8.2
-orjson==3.9.7
+orjson==3.9.15
 wheel==0.41.2
 tomli==2.0.1
 tomli-w==1.0.0