Bump pytest-asyncio from 0.24.0 to 0.26.0

Bumps [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) from 0.24.0 to 0.26.0.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.24.0...v0.26.0)

Also set asyncio_default_fixture_loop_scope="function" following pytest-dev/pytest-asyncio#924 (comment)

Author: weiji14

python/pyproject.toml

@@ -33,11 +33,12 @@ dev-dependencies = [
     "numpy>=1",
     "obstore>=0.5.1",
     "pip>=24.2",
-    "pytest-asyncio>=0.24.0",
+    "pytest-asyncio>=0.26.0",
     "pytest>=8.3.3",
     "ruff>=0.8.4",
 ]
 
 [tool.pytest.ini_options]
 addopts = "--color=yes"
+asyncio_default_fixture_loop_scope="function"
 asyncio_mode = "auto"