gdbm: update to 1.21

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/gdbm/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gdbm
-PKG_VERSION:=1.19
+PKG_VERSION:=1.21
 PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@GNU/gdbm
-PKG_HASH:=37ed12214122b972e18a0d94995039e57748191939ef74115b1d41d8811364bc
+PKG_HASH:=b0b7dbdefd798de7ddccdd8edf6693a30494f7789777838042991ef107339cc2
 
 PKG_MAINTAINER:=Marcel Denia <naoir@gmx.net>
 PKG_LICENSE:=GPL-3.0-or-later