package/dovecot: bump version to 2.2.16

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/dovecot/dovecot.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 DOVECOT_VERSION_MAJOR = 2.2
-DOVECOT_VERSION = $(DOVECOT_VERSION_MAJOR).15
+DOVECOT_VERSION = $(DOVECOT_VERSION_MAJOR).16
 DOVECOT_SITE = http://www.dovecot.org/releases/$(DOVECOT_VERSION_MAJOR)
 DOVECOT_INSTALL_STAGING = YES
 DOVECOT_LICENSE = LGPLv2.1