chore(deps-dev): update pytest-asyncio requirement

Updates the requirements on [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](https://github.com/pytest-dev/pytest-asyncio/compare/v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: pytest-asyncio
  dependency-version: 1.4.0
  dependency-type: direct:development
...

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

pyproject.toml

@@ -21,7 +21,7 @@ dev = [
     "ruff>=0.15.14",
     "ty>=0.0.39",
     "pytest>=9.0.3",
-    "pytest-asyncio>=1.3.0",
+    "pytest-asyncio>=1.4.0",
     "openapi-spec-validator>=0.9.0",
     "pytest-cov>=7.1.0",
     "prek>=0.4.1",