graphics/converseen: update to 0.11.0.0

ChangeLog: https://converseen.fasterland.net/

 * Fixed a compile error when using ImageMagick-6
 * Various Bugfixes
 * Various changes in the User Interface
 * Skipping conversion when “Don’t change the format” is selected but the output
   format is not supported
 * Removed unused video formats
 * Updated Italian and French translations
 * Various Bugfixes