chore(deps): bump org.java-websocket:Java-WebSocket from 1.5.6 to 1.5…

….7 (#7)

Bumps [org.java-websocket:Java-WebSocket](https://github.com/TooTallNate/Java-WebSocket) from 1.5.6 to 1.5.7.
- [Release notes](https://github.com/TooTallNate/Java-WebSocket/releases)
- [Changelog](https://github.com/TooTallNate/Java-WebSocket/blob/master/CHANGELOG.md)
- [Commits](TooTallNate/Java-WebSocket@v1.5.6...v1.5.7)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

echarts4j-chart-server/build.gradle

@@ -1,5 +1,5 @@
 ext {
-    javaWebSocketVersion = "1.5.6"
+    javaWebSocketVersion = "1.5.7"
 }
 
 description ':doughnut: An extension for echarts4j for live update.'