6.0.0 requires itself 5.x.x as a peer

[s-h-a-d-o-w]

Describe the bug

See pnpm output when installing 6.0.0:

 WARN  Issues with peer dependencies found
.
└─┬ webpack-cli 6.0.0
  ├─┬ @webpack-cli/configtest 3.0.0
  │ └── ✕ unmet peer [email protected]: found 6.0.0
  ├─┬ @webpack-cli/info 3.0.0
  │ └── ✕ unmet peer [email protected]: found 6.0.0
  └─┬ @webpack-cli/serve 3.0.0
    └── ✕ unmet peer [email protected]: found 6.0.0

To Reproduce

Install 6.0.0

Expected behavior

cli should not require itself at a lower version.

Additional context

For example:

webpack-cli/packages/serve/package.json

Line 25 in f70f8b0

"webpack-cli": "5.x.x"