Pin magika version to fix pip issue

[emtuls]

This pins magika to version 0.5.0 to fix a pip resolving issue with numpy conflicting with stringsifter as noted in #1130. It should be fixed when magika version 0.6.0 is officially released and we can revert back to how we installed it before after verifying.

[Ana06]

Thanks for adding a version argument to the VM-Install-With-Pip function @emtuls! 👍

[Ana06]

I think we should expect the version to include the ==:

Suggested change

	$toolNameForPip += "==$version"
	$toolNameForPip += "$version"

This allows us more flexibility in case we need for example to specify a range of versions. I would then also add a comment next to the version argument to document this:

[string] $version = "",  # Version using pip format, example: "==0.5.0"

This also allows us to simplify the code, as the if is not needed anymore needed? As the version is set to empty by default, it can't be null, only set or empty. Concatenating an empty string makes no different, so we can just do directly:

VM-Pip-Install "$toolName$version"

[Ana06]

Tested locally, both installation and uninstallation work as expected! Thanks for all the work @emtuls!!! 😄