devel/rubygem-cms_scanner: Fix gemspec for rubygem-ruby-progressbar 1.13.0 update

• Bump PORTREVISION for package change

Reference: https://github.com/wpscanteam/CMSScanner/commit/fa9024ff9758c26814ca102915a6b494be98908f

		https://github.com/wpscanteam/CMSScanner/commit/8b6b1342ae517d074fc8b9ef60698ddcc713a317