Update dependency webpack-cli to v6

This MR contains the following updates:

Package	Type	Update	Change
webpack-cli (source)	devDependencies	major	^5.0.0 -> ^6.0.0

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Release Notes

webpack/webpack-cli (webpack-cli)

v6.0.1

Compare Source

Bug Fixes

• update peer dependencies (#​4356) (7a7e5d9)

v6.0.0

Compare Source

BREAKING CHANGES

• the minimum required Node.js version is 18.12.0
• removed init, loader and plugin commands in favor create-webpack-app
• dropped support for webpack-dev-server@v4
• minimum supported webpack version is 5.82.0

Bug Fixes

• allow to require webpack.config.js in ESM format (#​4346) (5106684)
• correct the minimum help output (#​4057) (c727c4f)
• gracefully shutting down (#​4145) (90720e2)
• improve help output for possible values (#​4316) (4cd5aef)
• no serve when dev-server is false (#​2947) (a93e860)

Features

• output pnpm version with info/version command (#​3906) (38f3c6f)

5.1.4 (2023-06-07)

Bug Fixes

• multi compiler progress output (f659624)

5.1.3 (2023-06-04)

Bug Fixes

• regression for custom configurations (#​3834) (bb4f8eb)

5.1.2 (2023-06-04)

Bug Fixes

• improve check for custom webpack and webpack-dev-server package existance (0931ab6)
• improve help for some flags (f468614)
• improved support for .cts and .mts extensions (a77daf2)

5.1.1 (2023-05-09)

Bug Fixes

• false positive warning when --watch used (#​3783) (c0436ba)

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