Refactor/jruby bump

[luke-hill]

Description

Change the version of JRuby support (As JRuby 9.4 relies on ruby 3.1 which is being removed from support)

Type of change

Please delete options that are not relevant.

• Refactoring (improvements to code design or tooling that don't change behaviour)
• Breaking change (will cause existing functionality to not
  work as expected)

Please add an entry to the relevant section of CHANGELOG.md as part of this pull request.

Checklist:

Your PR is ready for review once the following checklist is
complete. You can also add some checks if you want to.

• Tests have been added for any changes to behaviour of the code
• New and existing tests are passing locally and on CI
• bundle exec rubocop reports no offenses
• RDoc comments have been updated
• CHANGELOG.md has been updated

[luke-hill]

@djberg96 - This seems to be tripping up windows on ruby 4.0 - Are we certain the gemspec requirements are set your end for windows ruby 4.0?

[djberg96]

@luke-hill sorry, what's my part in this?

[djberg96]

Oh, sys-uname. I have it set at https://github.com/djberg96/sys-uname/blob/main/sys-uname.gemspec#L19, but maybe I never released a separate gem for Windows, let me check.

[djberg96]

Ok, I've released sys-uname-1.5.1 which now has distinct releases, one for Windows, and the "regular" release for everyone else.