Log Message:
ruby-rouge: update to 3.20.0.

ChangeLog:

We've got some new lexers again! This release includes lexers for Augeas,
BibTeX, HLSL, LiveScript, Velocity and Zig. On top of that, we have fixes
for the C++, Diff, Haskell, HTML, JavaScript, JSX, OpenType Feature File,
PowerShell, TSX and TypeScript lexers.