Bump pytest-rerunfailures from 14.0 to 15.0 in /server

Bumps [pytest-rerunfailures](https://github.com/pytest-dev/pytest-rerunfailures) from 14.0 to 15.0.
- [Changelog](https://github.com/pytest-dev/pytest-rerunfailures/blob/master/CHANGES.rst)
- [Commits](pytest-dev/pytest-rerunfailures@14.0...15.0)

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

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

server/requirements.txt

@@ -47,6 +47,6 @@ pytest==8.3.3
 pytest-django==4.9.0
 pytest-asyncio==0.24.0
 pytest-cov==5.0.0
-pytest-rerunfailures==14.0
+pytest-rerunfailures==15.0
 aioresponses==0.7.6
 yappi==1.6.0