• Change LIB_DEPENDS from devel/oniguruma5 to 6
• PORTREVISION bump is not required since it doesn't affect default package creation (oniguruma is no default option)
• While here, remove now unrecognized configure option which results in a warning:
  
  configure: WARNING: unrecognized options: --with-libintl-prefix

PR: 221471
Submitted by: pi