devel/rubygem-mini_portile2-25: Make version 2.5.3 available

With commit 3ffe3a31 gitlab-ce got broken
by upgrading rubygem-mini_portile2 which broke rubygem-ruby-magic.

Added rubygem-mini_portile2 2.5.x back to port and fix dependency.
Reported by:	admin@asu-vei.ru