Bump pyright from 1.1.318 to 1.1.320 (#252)

Bumps [pyright](https://github.com/RobertCraigie/pyright-python) from 1.1.318 to 1.1.320.
- [Release notes](https://github.com/RobertCraigie/pyright-python/releases)
- [Commits](RobertCraigie/pyright-python@v1.1.318...v1.1.320)

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

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