[Snyk] Upgrade socket.io from 2.0.4 to 2.4.1

[snyk-bot]

Snyk has created this PR to upgrade socket.io from 2.0.4 to 2.4.1.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 6 versions ahead of your current version.
• The recommended version was released 9 months ago, on 2021-01-07.

Release notes

Package name: socket.io

• 2.4.1 - 2021-01-07
• 2.4.0 - 2021-01-04
• 2.3.0 - 2019-09-20
• 2.2.0 - 2018-11-28
• 2.1.1 - 2018-05-17
• 2.1.0 - 2018-03-29
• 2.0.4 - 2017-10-22

from socket.io GitHub release notes

Commit messages

Package name: socket.io

• e6b8697 chore(release): 2.4.1
• a169050 revert: fix(security): do not allow all origins by default
• 873fdc5 chore(release): 2.4.0
• f78a575 fix(security): do not allow all origins by default
• d33a619 fix: properly overwrite the query sent in the handshake
• 3951a79 chore: bump engine.io version
• 6fa026f ci: migrate to GitHub Actions
• 47161a6 [chore] Release 2.3.0
• cf39362 [chore] Bump socket.io-parser to version 3.4.0
• 4d01b2c test: remove deprecated Buffer usage (#3481)
• 8227192 [docs] Fix the default value of the 'origins' parameter (#3464)
• 1150eb5 [chore] Bump engine.io to version 3.4.0
• 9c1e73c [chore] Update the license of the chat example (#3410)
• df05b73 [chore] Release 2.2.0
• b00ae50 [feat] Add cache-control header when serving the client source (#2907)
• d3c653d [docs] Add Touch Support to the whiteboard example (#3104)
• a7fbd1a [fix] Throw an error when trying to access the clients of a dynamic namespace (#3355)
• 190d22b [chore] Bump dependencies
• 7b8fba7 [test] Update Travis configuration
• e5f0cea [docs] Use new JavaScript syntax inside the README (#3360)
• 7e35f90 [docs] fix `this` scope in the chat example
• 2dbec77 [chore] Update issue template
• d97d873 [docs] update README.md (#3309)
• e0b2cb0 [chore] Release 2.1.1

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