chore(deps): update dependency ws to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ws	devDependencies	major	^6.0.0 -> ^7.0.0

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Release Notes

websockets/ws

v7.3.0

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Features

• WebSocket.prototype.addEventListener() now supports the once option (#​1754).

v7.2.5

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Bug fixes

• Fixed compatibility with Node.js master (651d662).

v7.2.3

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Bug fixes

• WebSocket#{p{i,o}ng,close}() now thow an error if the data to send is too
  large to fit in a control frame (e54f08d).

v7.2.2

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Bug fixes

• Fixed an issue where calling webSocketStream.end() could cause the process
  to crash (9535702).
• The connection is now closed if a non-masked frame is received on the server
  or a masked frame is received on the client (#​1681).
• The status code 1014 is now allowed to be used (#​1682).

v7.2.1

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Bug fixes

• Added bufferutil and utf-8-validate as peer dependencies (#​1626).

v7.2.0

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Features

• Added ability to specify the readableObjectMode option when using
  WebSocket.createWebSocketStream() (#​1647).

v7.1.2

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Bug fixes

• Fixed a bug that caused compress jobs to never be marked as complete
  (#​1618).

v7.1.1

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Bug fixes

• An error is now thrown if the WebSocket server constructor is used
  incorrectly (3641266).

v7.1.0

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Features

• Added utility to wrap a WebSocket in a Duplex stream (#​1589).

Bug fixes

• Reverted "[minor] Remove unneeded if statement" (dbacf58, #​1591).

v7.0.1

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Bug fixes

• Added ability to disable sending the SNI extension (#​1587).

v7.0.0

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Breaking changes

• Dropped support for Node.js 6 (1e6999b).
• Dropped support for url.Url instances in the WebSocket constructor
  (692d7b4).
• The behavior of WebSocket#{p{i,o}ng,send}() has changed when the
  readyState attribute is not OPEN (#​1532)
  • If the readyState attribute is CONNECTING, an exception is thrown.
  • If the readyState attribute is CLOSING or CLOSED
    • The bufferedAmount attribute is increased by the length of the data
      argument in bytes.
    • If provided, the callback function is called with an error.
    • No exception is thrown even if the callback function is not provided.

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