upgrade rouge to 2.0.5

What does this MR do?

Upgrades Rouge to 2.0.5

Are there points in the code the reviewer needs to double check?

No

Why was this MR needed?

New lexers and bugfixes from upstream.

What are the relevant issue numbers?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the style guides
• Branch has no merge conflicts with master (if you do - rebase it please)
• Squashed related commits together