Update dependency webpack-cli to v4.2.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack-cli	4.0.0 -> 4.2.0

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Release Notes

webpack/webpack-cli

v4.2.0

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Bug Fixes

• --config-name behaviour for functional configs (#​2006) (29ecf8d)
• assign cache value for default configs (#​2013) (d2e3c74)
• callback deprecation (#​1977) (2cb0c0e)
• handle core flags for webpack 4 (#​2023) (ea66a7e)
• help and version functionality (#​1972) (e8010b3)

Features

• export utils from core for other packages (#​2011) (3004549)
• progress supports string argument (#​2000) (f13346e)
• suggest the closest match based on the Levenshtein distance algorithm (#​2010) (491a582)

v4.1.0

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Bug Fixes

• avoid unnecessary stringify (#​1920) (5ef1e7b)
• colored output (#​1944) (2bbbb14)
• move init command to separate package (#​1950) (92ad475)
• output stacktrace on errors (#​1949) (9ba9d6f)
• run CLI after webpack installation (#​1951) (564279e)
• support any config name (#​1926) (6f95b26)
• support array of functions and promises (#​1946) (2ace39b)
• watch mode and options (#​1931) (258219a)

Features

• allow passing strings in env flag (#​1939) (cc081a2)

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