www/rubygem-gollum-lib: Fix 644d2ef109a340cdf0d19561117db3d9e63b52f7

• Fix RUN_DEPENDS: Remove duplicate graphics/rubygem-gemojione and textproc/rubygem-github-markup
• Update version requirement of RUN_DEPENDS to match upstream
• Sort RUN_DEPENDS
• Update patch-gemspec: Update octicons after rubygem-octicons 17.0.0 update
• Rename gemspec patch to patch-gemspec
• Bump PORTREVISION for dependency and package change

PR: 260207