Drop git from gemspec?

[utkarsh2102]

Hello,

rake-ant/rake-ant.gemspec

Lines 17 to 19 in 317930b

	spec.files = `git ls-files -z`.split("\x0").reject do |f|
	f.match(%r{^(test|spec|features)/})
	end

Using git in gemspec is somewhat problematic and it's best if avoided.
Here's the more verbose rationale: https://docs.rubocop.org/rubocop-packaging/cops_packaging.html#gemspec-git-rationale

If you agree to drop git from gemspec and use Dir or Dir.glob, I'd be happy to raise a PR! Let me know what you think?

[headius]

I think for this library it would be fine to use Dir instead of the call to git. Go for it!