Bump websockets from 8.1 to 9.1 in /kyros

Bumps [websockets](https://github.com/aaugustin/websockets) from 8.1 to 9.1.
- [Release notes](https://github.com/aaugustin/websockets/releases)
- [Changelog](https://github.com/aaugustin/websockets/blob/9.1/docs/changelog.rst)
- [Commits](python-websockets/websockets@8.1...9.1)

---
updated-dependencies:
- dependency-name: websockets
  dependency-type: direct:development
...

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

kyros/dev-requirements.txt

@@ -56,7 +56,7 @@ typed-ast==1.4.1
 typing==3.7.4.1
 watchdog==0.10.2
 websocket-client==0.57.0
-websockets==8.1
+websockets==9.1
 wrapt==1.11.2
 yapf==0.30.0
 zipp==3.1.0