build(deps): bump pytest from 9.0.3 to 9.1.1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 9.0.3 to 9.1.1.
- [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...9.1.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.1.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,3 +1,3 @@
-pytest==9.0.3
+pytest==9.1.1
 ruff==0.15.20
 slack-bolt==1.28.0