libcoap: Update from 4.2.0 to 4.2.1

packages/libcoap/build.sh

@@ -1,9 +1,8 @@
 TERMUX_PKG_HOMEPAGE=https://libcoap.net/
 TERMUX_PKG_DESCRIPTION="Implementation of CoAP, a lightweight protocol for resource constrained devices"
 TERMUX_PKG_LICENSE="BSD 2-Clause"
-TERMUX_PKG_VERSION=4.2.0
-TERMUX_PKG_REVISION=1
-TERMUX_PKG_SHA256=9523e38da6ee8b2a8f5ce83ded64107dd1e514c7ad00cd74ccfe3454b679c271
+TERMUX_PKG_VERSION=4.2.1
+TERMUX_PKG_SHA256=29a0394a265d3febee41e5e2dc03d34292a0aede37f5f80334e529ac0dab2321
 TERMUX_PKG_SRCURL=https://github.com/obgm/libcoap/archive/v$TERMUX_PKG_VERSION.tar.gz
 TERMUX_PKG_DEPENDS="openssl"
 TERMUX_PKG_BREAKS="libcoap-dev"