fix: neg steps of {Enum,String}.slice/2 are deprecated in Elixir 1.16

[fishtreesugar]

As mentioned in Elixir 1.16's changelog:

[Enum] Deprecate passing a range with negative step on Enum.slice/2, give first..last//1 instead
[String] Deprecate passing a range with negative step on String.slice/2, give first..last//1 instead

[rrrene]

Hi.

Did this give you a warning with Elixir 1.16? I can't seem to reproduce a warning.

[fishtreesugar]

Yes, it shown when running w/ Elixir 1.16

[rrrene]

Strange. We tried to avoid this scenario. 😰

What system are you running this on? And which versions of OTP/Credo?

[rrrene]

Hi, since I was not able to reproduce this with any of my friends or in GitHub actions (where we now have a Mac runner because of this issue 👍 ), I am closing this.

If anyone has any issues with this in the future, please comment and/or re-open! 🙏