package/libcoap: bump to version 4.3.1

Update hash of LICENSE file (update in year:
https://github.com/obgm/libcoap/commit/43bfbea924e0f5220c4121487df980afe7159346)

https://github.com/obgm/libcoap/blob/v4.3.1/ChangeLog

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libcoap/libcoap.hash

@@ -1,4 +1,4 @@
 # Locally calculated
-sha256  1a195adacd6188d3b71c476e7b21706fef7f3663ab1fb138652e8da49a9ec556  libcoap-4.3.0.tar.gz
+sha256  074a71deca01e06d3acb00a1416d0fbeb87d130f40a3c0f6fda3a5c711855dca  libcoap-4.3.1.tar.gz
 sha256  09dd86a017bad210527085008cbf706609c58210897b69845af14099577e7eb7  COPYING
-sha256  c5625e704d52deade1c9b2d7931ac8593be147ba63af62b53b8c7e309b7eaeb9  LICENSE
+sha256  5711e8bf7e94b59fcf0681d0f73752111bc196563b60f8568f19dacd0213192b  LICENSE

package/libcoap/libcoap.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBCOAP_VERSION = 4.3.0
+LIBCOAP_VERSION = 4.3.1
 LIBCOAP_SITE = $(call github,obgm,libcoap,v$(LIBCOAP_VERSION))
 LIBCOAP_INSTALL_STAGING = YES
 LIBCOAP_LICENSE = BSD-2-Clause