chore(deps-dev): bump pytest-asyncio from 0.25.0 to 1.3.0 in /backend

Bumps [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) from 0.25.0 to 1.3.0.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](https://github.com/pytest-dev/pytest-asyncio/compare/v0.25.0...v1.3.0)

---
updated-dependencies:
- dependency-name: pytest-asyncio
  dependency-version: 1.3.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

backend/pyproject.toml

@@ -39,7 +39,7 @@ dependencies = [
 ]
 
 [dependency-groups]
-dev = ["pytest>=8.3.4", "pytest-asyncio==0.25.0", "ruff>=0.9.0", "black>=24.0.0"]
+dev = ["pytest>=8.3.4", "pytest-asyncio==1.3.0", "ruff>=0.9.0", "black>=24.0.0"]
 
 [tool.ruff.lint]
 # The current backend carries historical style debt in large legacy modules.