build(deps-dev): bump pytest-asyncio from 0.18.3 to 0.21.1 (#35)

Bumps [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) from 0.18.3 to 0.21.1.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.18.3...v0.21.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -16,7 +16,7 @@ shed = ">=0.9.5,<2023.7.0"
 pylint = "^2.13.8"
 mypy = ">=0.950,<1.5"
 pytest = "^7.1.2"
-pytest-asyncio = "^0.18.3"
+pytest-asyncio = ">=0.18.3,<0.22.0"
 pytest-cov = "^4.1.0"
 docformatter = "^1.4"
 pytest-pylint = "^0.18.0"