chore(deps): update websocket-client requirement

Updates the requirements on [websocket-client](https://github.com/websocket-client/websocket-client) to permit the latest version.
- [Release notes](https://github.com/websocket-client/websocket-client/releases)
- [Changelog](https://github.com/websocket-client/websocket-client/blob/master/ChangeLog)
- [Commits](websocket-client/websocket-client@v1.0.0...v1.9.1)

---
updated-dependencies:
- dependency-name: websocket-client
  dependency-version: 1.9.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements/optional.txt

@@ -35,4 +35,4 @@ websockets>=9.1,<16; python_version == "3.9"
 websockets>=16.1.1,<17; python_version >= "3.10"
 
 # websocket-client
-websocket-client>=1,<2
+websocket-client>=1.9.1,<2