pigeonhole: update to 0.4.20

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

mail/pigeonhole/Makefile

@@ -8,14 +8,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=pigeonhole
-PKG_VERSION:=0.4.16
+PKG_VERSION:=0.4.20
 PKG_RELEASE:=1
 
 DOVECOT_VERSION:=2.2
 
 PKG_SOURCE:=dovecot-$(DOVECOT_VERSION)-$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://pigeonhole.dovecot.org/releases/$(DOVECOT_VERSION)
-PKG_HASH:=8f0b98f18062d6e241eef74ebe16cc167cd246361cbe6657d94f0ecc5d7d3234
+PKG_HASH:=6fe17d0b8f25f2ad580e01ad81ce47a9e965255e383a1f80e455f9ca0f00be5b
 PKG_LICENSE:=LGPL-2.1
 PKG_LICENSE_FILES:=COPYING COPYING.LGPL