Bump pytest-asyncio from 0.20.3 to 0.21.0 (#792)

Bumps [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) from 0.20.3 to 0.21.0.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.20.3...v0.21.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

setup.cfg

@@ -38,7 +38,7 @@ dev =
     pre-commit==3.0.3
     codecov==2.1.12
     pytest==7.1.2
-    pytest-asyncio==0.20.3
+    pytest-asyncio==0.21.0
     pytest-cov==3.0.0
     python-jose==3.3.0