Bump pytest from 8.4.2 to 9.0.3 in /src/backend-api

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.4.2 to 9.0.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.4.2...9.0.3)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]

src/backend-api/pyproject.toml

@@ -25,7 +25,7 @@ dependencies = [
 ]
 
 [dependency-groups]
-dev = ["pytest>=8.4.1", "pytest-cov>=6.2.1"]
+dev = ["pytest>=9.0.3", "pytest-cov>=6.2.1"]
 
 [tool.uv]
 override-dependencies = [