Update pytest-asyncio requirement from ~=0.19.0 to ~=0.20.1 (#1717)

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)
- [Changelog](https://github.com/pytest-dev/pytest-asyncio/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-asyncio@v0.19.0...v0.20.1)

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

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requirements-dev.txt

@@ -1,7 +1,7 @@
 -r requirements.txt
 pylint~=2.15.5
 pytest~=7.1.3
-pytest-asyncio~=0.19.0
+pytest-asyncio~=0.20.1
 # pytest-order~=1.0.1
 mypy~=0.982
 coverage~=6.5