chore(deps-dev): Bump pytest from 9.0.3 to 9.1.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 9.0.3 to 9.1.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@9.0.3...9.1.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -75,7 +75,7 @@ optional-dependencies.dev = [
     "pyrefly==1.0.0",
     "pyright==1.1.410",
     "pyroma==5.0.1",
-    "pytest==9.0.3",
+    "pytest==9.1.0",
     "pytest-beartype-tests==2026.4.26",
     "pytest-retry==1.7.0",
     "pytest-xdist==3.8.0",