build(deps): bump ws from 6.2.0 to 7.1.1

[dependabot-preview]

Bumps ws from 6.2.0 to 7.1.1.

Release notes

Sourced from ws's releases.

7.1.1

Bug fixes

• An error is now thrown if the WebSocket server constructor is used
  incorrectly (36412662).

7.1.0

Features

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

Bug fixes

• Reverted "[minor] Remove unneeded if statement" (dbacf582, #1591).

7.0.1

Bug fixes

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

7.0.0

Breaking changes

• Dropped support for Node.js 6 (1e6999bb).
• Dropped support for url.Url instances in the WebSocket constructor
  (692d7b47).
• 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.

6.2.1

Bug fixes

• Fixed a bug that, under certain circumstances, prevented the close timer from
  being set (aa1dcd5).

Commits

• cf467db [dist] 7.1.1
• 3641266 [minor] Throw an error on invalid usage
• dd42c8b [dist] 7.1.0
• a49a827 [feature] Add utility to wrap a WebSocket in a Duplex stream (#1589)
• dbacf58 Revert "[minor] Remove unneeded if statement"
• db14864 [pkg] Update eslint-config-prettier to version 6.0.0 (#1599)
• c62ea9f [doc] Improve comment in code snippet (#1597)
• 47e7d64 [pkg] Update eslint to version 6.0.0 (#1595)
• d9b5562 [doc] Improve server broadcast example (#1590)
• 38d3bf2 [dist] 7.0.1
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #191.