Update dependency webpack-serve to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
webpack-serve	devDependencies	major	^2.0.0 -> ^3.0.0	source

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Release Notes

shellscape/webpack-serve

v3.0.0

Compare Source

Major Release

webpack-serve is now a CLI-wrapper for webpack-plugnin-serve, similar to webpack-nano. As such the available options and and command-line flags have changed.

Migrating

If you're using the API method of v2.x, there's no longer a need for this module. You should use webpack-plugin-serve within your chosen config and use webpack's API directly. Most of the new options have a corollary to the old. (Due to a new addition to my family I have not had the chance to write a migration guide, nor an options map from old to new.)

Please feel free to open an issue and I'll be happy to help with your migration.

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[mkcor]

I have fetched the branch and successfully built the package locally. I will open an issue to add this final step to our CI.