Horde package update:

comms/pear-Horde_ActiveSync 2.28.4 -> 2.28.5
devel/pear-Horde_Core 2.20.4 -> 2.20.5
devel/pear-Horde_Icalendar 2.0.11 -> 2.1.0
mail/pear-Horde_Imap_Client 2.28.1 -> 2.29.0
www/horde-base 5.2.5 -> 5.2.6
mail/horde-imp 6.2.8 -> 6.2.9
deskutils/horde-kronolith 4.2.7 -> 4.2.8
deskutils/horde-nag 4.2.4 -> 4.2.5
mail/horde-turba 4.2.6 -> 4.2.7
mail/horde-webmail 5.2.6 -> 5.2.7
deskutils/horde-groupware 5.2.6 -> 5.2.7