Log Message:
ruby-rouge: update to 3.18.0.

ChangeLog:

This release includes new lexers for Cypher, Datastudio, GHC Cmm, ISBL,
Rego, Solidity and YANG. It also incorporates fixes for the C++, CMake,
Console, F#, JSON, JSONDOC, Kotlin, Markdown, Pascal, PHP, Python,
Racket, Ruby, Terraform, TypeScript and Vue lexers.