Add `--except` option to `igniter.upgrade`

[flavioescobar]

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Is your feature request related to a problem? Please describe.

Not related to a problem. It's just a nice-to-have IMO.

Describe the solution you'd like

I think it would be nice to add an --except option to the igniter.upgrade mix task so that we can use it together with --all to upgrade everything except some packages.

Here's an example:

mix igniter.upgrade --all --except phoenix_live_view

This would upgrade all dependencies in the project, except phoenix_live_view.

Describe alternatives you've considered

No response

Additional context

No response

[zachdaniel]

Sounds useful! PRs welcome 🙇