build(deps-dev): bump pyright from 1.1.326 to 1.1.327 in /backend

Bumps [pyright](https://github.com/RobertCraigie/pyright-python) from 1.1.326 to 1.1.327.
- [Release notes](https://github.com/RobertCraigie/pyright-python/releases)
- [Commits](RobertCraigie/pyright-python@v1.1.326...v1.1.327)

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

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