build: bump orjson from 3.9.7 to 3.9.9 (#78)

Bumps [orjson](https://github.com/ijl/orjson) from 3.9.7 to 3.9.9.
- [Release notes](https://github.com/ijl/orjson/releases)
- [Changelog](https://github.com/ijl/orjson/blob/master/CHANGELOG.md)
- [Commits](ijl/orjson@3.9.7...3.9.9)

---
updated-dependencies:
- dependency-name: orjson
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,4 +1,4 @@
 mmcif==0.81
 numpy==1.26.1
-orjson==3.9.7
+orjson==3.9.9
 rnapolis==0.1.4