ruby: Update tree-sitter grammar for the Ruby language (#16892)

Closes [#7776](https://github.com/zed-industries/zed/issues/7776)

Hi, this pull request updates the tree-sitter grammar for the Ruby
language.

The changes between two version do not have any breaking change:
https://github.com/tree-sitter/tree-sitter-ruby/compare/dc2d7d6b50f9975bc3c35bbec0ba11b2617b736b..7dbc1e2d0e2d752577655881f73b4573f3fe85d4

Release Notes:

- N/A