[Snyk] Security upgrade socket.io from 2.0.4 to 2.4.0

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `yarn` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • yarn.lock

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	551/1000 Why? Recently disclosed, Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-JS-WS-1296835	No	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Check the changes in this PR to ensure they won't cause issues with your project.

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For more information: 🧐 View latest project report

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📚 Read more about Snyk's upgrade and patch logic

[codecov-commenter]

Codecov Report

:exclamation: No coverage uploaded for pull request base (master@b323c86). Click here to learn what that means. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #64   +/-   ##
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  Coverage          ?   67.20%           
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  Files             ?       29           
  Lines             ?      991           
  Branches          ?      110           
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  Hits              ?      666           
  Misses            ?      290           
  Partials          ?       35           

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