[Snyk] Security upgrade webpack-dev-server from 2.9.4 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:
  • examples/package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	586/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-JS-GLOBPARENT-1016905	Yes	Proof of Concept

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

Commit messages

Package name: webpack-dev-server

The new version differs by 250 commits.

• c9271b9 chore(release): 4.0.0
• 18bf369 test: fix stability (#3676)
• cdcabb2 fix: respect protocol from browser for manual setup (#3675)
• 1768d6b fix: initial reloading for lazy compilation (#3662)
• 4f5bab1 docs: improve examples (#3672)
• f2d87fb fix: improve https CLI output (#3673)
• 0277c5e chore: remove redundant console statements (#3671)
• 16fcdbc docs: add `ipc` example (#3667)
• 8915fb8 test: add e2e tests for built in routes (#3669)
• 4d1cbe1 docs: ask `version` information in issue template (#3668)
• b6c1881 chore(deps-dev): bump core-js from 3.16.1 to 3.16.2 (#3666)
• ffa8cc5 chore(deps-dev): bump supertest from 6.1.5 to 6.1.6 (#3665)
• f1fdaa7 chore(release): 4.0.0-rc.1
• c4678bc fix: legacy API (#3660)
• d8bdd03 test: fix stability (#3661)
• 22b1414 refactor: remove `killable` (#3657)
• 75bafbf test: add e2e tests for module federation (#3658)
• 493ccbd chore(deps): update `ws` (#3652)
• ae8c523 test: add e2e test for universal compiler (#3656)
• f94b84f chore(deps): update (#3655)
• 1923132 test: fix cli
• 2adfd01 test: fix todo (#3653)
• 6e2cbde fix: proxy logging and allow to pass options without the `target` option (#3651)
• c9ccc96 fix: respect infastructureLogging.level for client.logging (#3613)

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