Bump org.java-websocket:Java-WebSocket from 1.5.7 to 1.6.0

Bumps [org.java-websocket:Java-WebSocket](https://github.com/TooTallNate/Java-WebSocket) from 1.5.7 to 1.6.0.
- [Release notes](https://github.com/TooTallNate/Java-WebSocket/releases)
- [Changelog](https://github.com/TooTallNate/Java-WebSocket/blob/master/CHANGELOG.md)
- [Commits](TooTallNate/Java-WebSocket@v1.5.7...v1.6.0)

---
updated-dependencies:
- dependency-name: org.java-websocket:Java-WebSocket
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -37,7 +37,7 @@ vyarus-github-info-plugin = "2.0.0"
 npm-sockjs-client = "1.6.1"
 
 # test-only
-java-websocket = "1.5.7"
+java-websocket = "1.6.0"
 jetty-websocket = "11.0.24"
 npm-isomorphic-fetch = "3.0.0"
 npm-isomorphic-ws = "5.0.0"