fix(lws): Update websocket Echo server

[glmfe]

Description

• Update CI/Example LWS Websocket Echo Server, since "wss://echo.websocket.events" is no longer available.

Related

Testing

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Note

Switches the example client to use echo.websocket.org instead of echo.websocket.events, updating default config and README logs.

• Examples (libwebsockets/client):
  • Update default WEBSOCKET_URI in components/libwebsockets/examples/client/main/Kconfig.projbuild from echo.websocket.events to echo.websocket.org.
  • Adjust sample logs in components/libwebsockets/examples/client/README.md to use echo.websocket.org.

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