build(deps-dev): update pytest-asyncio requirement

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)
- [Commits](pytest-dev/pytest-asyncio@v0.1.1...v0.23.7)

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

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

Author: dependabot[bot]

devenv-requirements.txt

@@ -2,4 +2,4 @@
 -r test-requirements.txt
 mockupdb # required by `pymongo` tests that are enabled by `pymongo` from linter requirements
 pytest<7.0.0 # https://github.com/pytest-dev/pytest/issues/9621; see tox.ini
-pytest-asyncio<=0.21.1 # https://github.com/pytest-dev/pytest-asyncio/issues/706
+pytest-asyncio<=0.23.7 # https://github.com/pytest-dev/pytest-asyncio/issues/706