Ruby 3.0 compatibility

[drselump14]

https://www.ruby-lang.org/en/news/2019/12/12/separation-of-positional-and-keyword-arguments-in-ruby-3-0/

From ruby 3.0, positional and keyword arguments are separated, so we need to use double splat explicitly for these lines

[apotonick]

Cool, thanks! 💚 Are you happy with the test API so far? Any suggestions from your experience?

[drselump14]

Hi @apotonick, thanks for approving the PR.
So far the test api works well and I like it, no complaint

[apotonick]

@yogeshjain999 Could we get CI for this gem, so this would be tested in Ruby 3.x automatically? ❤️