Bump orjson from 3.7.1 to 3.7.3 (#2973)

Bumps [orjson](https://github.com/ijl/orjson) from 3.7.1 to 3.7.3.
- [Release notes](https://github.com/ijl/orjson/releases)
- [Changelog](https://github.com/ijl/orjson/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ijl/orjson/compare/3.7.1...3.7.3)

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

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

requirements.txt

@@ -10,7 +10,7 @@ mercurial==6.1.4
 microannotate==0.0.24
 mozci==2.2.1
 numpy==1.22.4
-orjson==3.7.1
+orjson==3.7.3
 ortools==9.3.10497
 pandas==1.4.2
 psutil==5.9.1