chore(deps-dev): update pytest requirement in /mcp-server (#50)

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.0.0...9.1.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.1.1
  dependency-type: direct:development
...

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Author: dependabot[bot]

mcp-server/requirements-dev.txt

@@ -1,2 +1,2 @@
 -r requirements.txt
-pytest>=8,<9
+pytest>=9.1.1,<10