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-version: 1.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

websocket-api-impl/pom.xml

@@ -138,7 +138,7 @@
     <dependency>
       <groupId>org.java-websocket</groupId>
       <artifactId>Java-WebSocket</artifactId>
-      <version>1.5.7</version>
+      <version>1.6.0</version>
       <scope>test</scope>
     </dependency>
   </dependencies>