Bump pytest from 8.3.5 to 9.0.0 in /server

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.3.5 to 9.0.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.5...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

server/requirements.txt

@@ -43,7 +43,7 @@ daphne==4.2.*
 black==24.10.0
 isort==6.0.1
 flake8==7.2.0
-pytest==8.3.5
+pytest==9.0.0
 pytest-django==4.11.1
 pytest-asyncio==0.26.0
 pytest-cov==6.1.1