Bump socket.io from 2.1.1 to 2.4.0#4

Bumps [socket.io](https://github.com/socketio/socket.io) from 2.1.1 to 2.4.0. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/socketio/socket.io/releases">socket.io's releases</a>.</em></p> <blockquote> <h2>2.4.0</h2> <p>Related blog post: <a href="https://socket.io/blog/socket-io-2-4-0/">https://socket.io/blog/socket-io-2-4-0/</a></p> <h3>Features (from Engine.IO)</h3> <ul> <li>add support for all cookie options (<a href="https://github.com/socketio/engine.io/commit/19cc58264a06dca47ed401fbaca32dcdb80a903b">19cc582</a>)</li> <li>disable perMessageDeflate by default (<a href="https://github.com/socketio/engine.io/commit/5ad273601eb66c7b318542f87026837bf9dddd21">5ad2736</a>)</li> </ul> <h3>Bug Fixes</h3> <ul> <li><strong>security:</strong> do not allow all origins by default (<a href="https://github.com/socketio/socket.io/commit/f78a575f66ab693c3ea96ea88429ddb1a44c86c7">f78a575</a>)</li> <li>properly overwrite the query sent in the handshake (<a href="https://github.com/socketio/socket.io/commit/d33a619905a4905c153d4fec337c74da5b533a9e">d33a619</a>)</li> </ul> <p>:warning: <strong>BREAKING CHANGE</strong> :warning:</p> <p>Previously, CORS was enabled by default, which meant that a Socket.IO server sent the necessary CORS headers (<code>Access-Control-Allow-xxx</code>) to <strong>any</strong> domain. This will not be the case anymore, and you now have to explicitly enable it.</p> <p>Please note that you are not impacted if:</p> <ul> <li>you are using Socket.IO v2 and the <code>origins</code> option to restrict the list of allowed domains</li> <li>you are using Socket.IO v3 (disabled by default)</li> </ul> <p>This commit also removes the support for '*' matchers and protocol-less URL:</p> <pre><code>io.origins('https://example.com:443'); =&gt; io.origins(['https://example.com']); io.origins('localhost:3000'); =&gt; io.origins(['http://localhost:3000']); io.origins('http://localhost:*'); =&gt; io.origins(['http://localhost:3000']); io.origins('*:3000'); =&gt; io.origins(['http://localhost:3000']); </code></pre> <p>To restore the previous behavior (please use with caution):</p> <pre lang="js"><code>io.origins((_, callback) =&gt; { callback(null, true); }); </code></pre> <p>See also:</p> <ul> <li><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS">https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS</a></li> <li><a href="https://socket.io/docs/v3/handling-cors/">https://socket.io/docs/v3/handling-cors/</a></li> <li><a href="https://socket.io/docs/v3/migrating-from-2-x-to-3-0/#CORS-handling">https://socket.io/docs/v3/migrating-from-2-x-to-3-0/#CORS-handling</a></li> </ul> <p>Thanks a lot to <a href="https://github.com/ni8walk3r"><code>@ni8walk3r</code></a> for the security report.</p> <h4>Links:</h4> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/socketio/socket.io/blob/2.4.0/CHANGELOG.md">socket.io's changelog</a>.</em></p> <blockquote> <h1><a href="https://github.com/socketio/socket.io/compare/2.3.0...2.4.0">2.4.0</a> (2021-01-04)</h1> <h3>Bug Fixes</h3> <ul> <li><strong>security:</strong> do not allow all origins by default (<a href="https://github.com/socketio/socket.io/commit/f78a575f66ab693c3ea96ea88429ddb1a44c86c7">f78a575</a>)</li> <li>properly overwrite the query sent in the handshake (<a href="https://github.com/socketio/socket.io/commit/d33a619905a4905c153d4fec337c74da5b533a9e">d33a619</a>)</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/socketio/socket.io/commit/873fdc55eddd672960fdbc1325ccb7c4bf466f05"><code>873fdc5</code></a> chore(release): 2.4.0</li> <li><a href="https://github.com/socketio/socket.io/commit/f78a575f66ab693c3ea96ea88429ddb1a44c86c7"><code>f78a575</code></a> fix(security): do not allow all origins by default</li> <li><a href="https://github.com/socketio/socket.io/commit/d33a619905a4905c153d4fec337c74da5b533a9e"><code>d33a619</code></a> fix: properly overwrite the query sent in the handshake</li> <li><a href="https://github.com/socketio/socket.io/commit/3951a79359c19f9497de664d96a8f9f80196a405"><code>3951a79</code></a> chore: bump engine.io version</li> <li><a href="https://github.com/socketio/socket.io/commit/6fa026fc94fb3a1e6674b8a2c1211b24ee38934a"><code>6fa026f</code></a> ci: migrate to GitHub Actions</li> <li><a href="https://github.com/socketio/socket.io/commit/47161a65d40c2587535de750ac4c7d448e5842ba"><code>47161a6</code></a> [chore] Release 2.3.0</li> <li><a href="https://github.com/socketio/socket.io/commit/cf39362014f5ff13a17168b74772c43920d6e4fd"><code>cf39362</code></a> [chore] Bump socket.io-parser to version 3.4.0</li> <li><a href="https://github.com/socketio/socket.io/commit/4d01b2c84cc8dcd6968e422d44cb5e78851058b9"><code>4d01b2c</code></a> test: remove deprecated Buffer usage (<a href="https://github-redirect.dependabot.com/socketio/socket.io/issues/3481">#3481</a>)</li> <li><a href="https://github.com/socketio/socket.io/commit/82271921db9d5d2048322a0c9466ffcb09b2a501"><code>8227192</code></a> [docs] Fix the default value of the 'origins' parameter (<a href="https://github-redirect.dependabot.com/socketio/socket.io/issues/3464">#3464</a>)</li> <li><a href="https://github.com/socketio/socket.io/commit/1150eb50e9ce4f15cbd86c51de69df82f3194206"><code>1150eb5</code></a> [chore] Bump engine.io to version 3.4.0</li> <li>Additional commits viewable in <a href="https://github.com/socketio/socket.io/compare/2.1.1...2.4.0">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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