pigeonhole: update to 0.4.21

Signed-off-by: W. Michael Petullo <mike@flyn.org>

mail/pigeonhole/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dovecot-pigeonhole
-PKG_VERSION_PLUGIN:=0.4.20
+PKG_VERSION_PLUGIN:=0.4.21
 PKG_VERSION_DOVECOT:=$(shell make --no-print-directory -C ../dovecot/ val.PKG_VERSION V=s)
 PKG_VERSION:=$(PKG_VERSION_DOVECOT)-$(PKG_VERSION_PLUGIN)
 PKG_RELEASE:=2
@@ -17,7 +17,7 @@ DOVECOT_VERSION:=2.2
 
 PKG_SOURCE:=dovecot-$(DOVECOT_VERSION)-pigeonhole-$(PKG_VERSION_PLUGIN).tar.gz
 PKG_SOURCE_URL:=https://pigeonhole.dovecot.org/releases/$(DOVECOT_VERSION)
-PKG_HASH:=6fe17d0b8f25f2ad580e01ad81ce47a9e965255e383a1f80e455f9ca0f00be5b
+PKG_HASH:=4ae09cb788c5334d167f5a89ee70b0616c3231e5904ad258ce408e4953cfdd6a
 PKG_LICENSE:=LGPL-2.1
 PKG_LICENSE_FILES:=COPYING COPYING.LGPL