Bump zuban from 0.9.0 to 0.9.1 in /python (#7545)

Bumps [zuban](https://github.com/zubanls/zubanls-python) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/zubanls/zubanls-python/releases)
- [Commits](https://github.com/zubanls/zubanls-python/compare/v0.9.0...v0.9.1)

---
updated-dependencies:
- dependency-name: zuban
  dependency-version: 0.9.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

python/pyproject.toml

@@ -41,7 +41,7 @@ dev = [
     "pyright==1.1.411",
     "pyrefly==1.1.1",
     "ty==0.0.64",
-    "zuban==0.9.0",
+    "zuban==0.9.1",
     "opentelemetry-sdk",
     #tasks
     "poethepoet==0.48.0",