Update pytest-asyncio requirement from <0.15,>=0.10 to >=0.10,<0.16 (#1303)

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](https://github.com/pytest-dev/pytest-asyncio/compare/v0.10.0...v0.15.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

setup.py

@@ -71,7 +71,7 @@ setup(
         "test": [
             "pytest>=5.2.2,<6.3.0",
             "pytest-xdist>=2.2.1,<2.3",
-            "pytest-asyncio>=0.10,<0.15",
+            "pytest-asyncio>=0.10,<0.16",
             "beautifulsoup4>=4.8.1,<4.10.0",
             "black==20.8b1",
             "pytest-timeout>=1.4.2,<1.5",