build(deps-dev): bump orjson from 3.7.5 to 3.7.7

Bumps [orjson](https://github.com/ijl/orjson) from 3.7.5 to 3.7.7.
- [Release notes](https://github.com/ijl/orjson/releases)
- [Changelog](https://github.com/ijl/orjson/blob/master/CHANGELOG.md)
- [Commits](ijl/orjson@3.7.5...3.7.7)

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

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

requirements-dev.txt

@@ -19,4 +19,4 @@ doc8~=0.11.2
 pre-commit==2.19.0
 
 # optional dependencies
-orjson==3.7.5
+orjson==3.7.7