Update pyyaml requirement from >=5.4.1 to >=6.0.3

Updates the requirements on [pyyaml](https://github.com/yaml/pyyaml) to permit the latest version.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/6.0.3/CHANGES)
- [Commits](yaml/pyyaml@5.4.1...6.0.3)

---
updated-dependencies:
- dependency-name: pyyaml
  dependency-version: 6.0.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-asyncio.txt

@@ -1,6 +1,6 @@
 certifi>=14.05.14  # MPL
 six>=1.9.0  # MIT
 python-dateutil>=2.5.3  # BSD
-pyyaml>=5.4.1  # MIT
+pyyaml>=6.0.3  # MIT
 urllib3>=1.24.2,!=2.6.0 # MIT
 aiohttp>=3.9.0,<4.0.0  # Apache-2.0

requirements.txt

@@ -2,7 +2,7 @@ certifi>=14.05.14 # MPL
 six>=1.9.0  # MIT
 python-dateutil>=2.5.3  # BSD
 setuptools>=21.0.0  # PSF/ZPL
-pyyaml>=5.4.1  # MIT
+pyyaml>=6.0.3  # MIT
 websocket-client>=0.32.0,!=0.40.0,!=0.41.*,!=0.42.* # LGPLv2+
 requests # Apache-2.0
 requests-oauthlib # ISC