gnupg: Update from 1.4.19 to 1.4.20

packages/gnupg/build.sh

@@ -1,7 +1,6 @@
 TERMUX_PKG_HOMEPAGE=http://www.gnupg.org/
 TERMUX_PKG_DESCRIPTION="OpenPGP implementation for encrypting and signing data and communication"
-TERMUX_PKG_VERSION=1.4.19
-TERMUX_PKG_BUILD_REVISION=2
+TERMUX_PKG_VERSION=1.4.20
 
 TERMUX_PKG_SRCURL=ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-${TERMUX_PKG_VERSION}.tar.bz2
 # disable readline since gnupg is used in bootstrap, so nice to avoid readline+ncurses dependencies.