feat: add option to include zero based carets dependencies

[TheSuperiorStanislav]

By default, the plugin ignores zero-based carets. But this option to update them too will be useful for many popular packages that are still 0.*.* version. For example fastapi or uvicorn.

Closes #41

[TheSuperiorStanislav]

@MousaZeidBaker Could you take a look?

[uuip]

The plugin's README doesn’t mention this issue at all--"By default, the plugin ignores zero-based carets. ".
I initially thought it was a bug in version parsing, but after reviewing the code, I found some special handling that seems unnecessary.
Since we're using --latest, everything except those locked to specific versions should be upgraded. By default, 0.x versions should be upgraded. On the computer I use, I simply deleted those 4 lines of code. I think this plugin has quite a lot of options.