games/rubygem-vimgolf: Update to 0.4.9

While here, appease portfmt and portclippy.

Changes: https://github.com/igrigorik/vimgolf/compare/v0.4.8...f69342a74c
PR: 254613
Submitted by: Derek Schrock <dereks@lifeofadishwasher.com> (maintainer)
Approved by: mentors (implicit)