[Snyk] Security upgrade socket.io-client from 2.0.3 to 4.0.0

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` 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

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	726/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 8.1	Arbitrary Code Injection SNYK-JS-XMLHTTPREQUESTSSL-1082936	Yes	Proof of Concept

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

Commit messages

Package name: socket.io-client

The new version differs by 116 commits.

• d28cde7 chore(release): 4.0.0
• 43613d1 fix(bundle): restore support for JS modules
• 6abfa1f feat: add autoUnref option
• 5902365 feat: add support for typed events
• 78ec5a6 chore(release): 3.1.2
• 83a65be chore: bump engine.io-client version
• 13b32b3 fix: restore support for web workers
• 311c5d1 chore(release): 3.1.1
• 7a0c2b5 fix: include the path in the manager ID
• 61afc5d fix: remove polyfill for process in the bundle
• 47f917a fix(typings): add return types and general-case overload signatures (#1440)
• f02ab3b fix(typings): fix the type of the "query" option (#1439)
• be81a2c chore: point towards the master branch for the CI badge
• 0a63a17 refactor: remove unused line
• 5529f34 chore(release): 3.1.0
• 5d9b4eb chore: bump socket.io-parser version
• 13e16b9 chore: bump engine.io-client version
• fe97243 fix(typings): make Manager#opts public (#1437)
• 4922e39 docs: points towards the website
• bcdd3be chore(release): 3.0.5
• cf9fc35 chore: bump debug version
• 53c7374 fix: emit a connect_error event upon connection failure
• b83f89c fix(typings): make sendBuffer and receiveBuffer public
• 8c08c5d refactor: remove global polyfill from webpack config

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