chore(deps): update pytest-asyncio requirement from <1 to <2

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...v1.0.0)

---
updated-dependencies:
- dependency-name: pytest-asyncio
  dependency-version: 1.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements/testing.txt

@@ -1,4 +1,4 @@
 # pip install -r requirements/testing.txt
 -r testing_without_asyncio.txt
 -r async.txt
-pytest-asyncio<1;
+pytest-asyncio<2;