[Snyk] Security upgrade webpack-cli from 3.3.11 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
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	768/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	Yes	Proof of Concept

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

Commit messages

Package name: webpack-cli

The new version differs by 250 commits.

• fb50f76 chore(release): publish new version
• 2c75aeb chore: new version of the packages
• 0d05c30 chore(release): publish %s
• 3f9e151 chore: fix lerna config
• 2c1e34c tests(generator): enhance init generator tests (#1236)
• 6ee61b9 Fix loader-generator and plugin-generator tests (#1250)
• 52956a2 Fixing the typos and grammatical errors in Readme files (#1246)
• 7faaed2 chore: update Bug_report & Feature_request Templates (#1256)
• 7a5b33d feat(webpack-cli): added mode argument (#1253)
• 3715756 tests(webpack-cli): add test case for defaults flag (#1254)
• a7cba2f chore: project maintanance and typescript fix (#1247)
• 7748472 chore: ignore package-lock.json and remove its references (#1252)
• a014aa7 docs: fix supported arguments & commands link in README (#1244)
• 06129a1 feat(webpack-cli): add progress bar for progress flag (#1238)
• 6cc6a49 chore: post refactor CLI (#1237)
• 358651e chore: move cli under lerna package (#1225)
• 2dc495a fix(init): fix webpack config scaffold (#1231)
• 1ab62d2 tests(generator): add tests for plugin generator (#1235)
• d2dd0c1 tests(sourcemap): fix flaky stats statement (#1232)
• f6dc680 tests(loader-generator): add tests for loader generator (#1234)
• 35d1381 tests(generator): enable init generator test (#1233)
• 66cdcb6 chore(generator): remove transpiled tests (#1229)
• f29a170 fix(init): fix the invalid package name (#1228)
• 8c3a66d chore(cli): updated changelog of v3 (#1224)

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