Bump pytest-asyncio from 0.16.0 to 0.18.3 (#2198)

Bump pytest-asyncio from 0.16.0 to 0.18.3 (#2198)

* Bump pytest-asyncio from 0.16.0 to 0.18.3

Bumps [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) from 0.16.0 to 0.18.3.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Changelog](https://github.com/pytest-dev/pytest-asyncio/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest-asyncio/compare/v0.16.0...v0.18.3)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tom Christie <tom@tomchristie.com>