Anonymous (hash) splat arguments

[aibaars]

From Ruby 3.2 release notes

Anonymous rest and keyword rest arguments can now be passed as arguments, instead of just used in method parameters. [Feature #18351]

 def foo(*)
   bar(*)
 end
 def baz(**)
   quux(**)
 end

This PR also upgrade the node-gyp version to solve a CI failure on the latest version of OSX: https://github.com/tree-sitter/tree-sitter-ruby/actions/runs/3873495109/jobs/6603577164

Checklist:

• All tests pass in CI.
• There are sufficient tests for the new fix/feature.
• Grammar rules have not been renamed unless absolutely necessary.
• The conflicts section hasn't grown too much.
• The parser size hasn't grown too much (check the value of STATE_COUNT in src/parser.c).

[hendrikvanantwerpen]

Thanks for adding the links to the release notes and issue, as well as updating the tests. That made reviewing very easy! It looks good to me.

[hendrikvanantwerpen]

@aibaars I went ahead and merged this, as I wasn't sure if you could do that yourself.