package/jsoncpp: security bump version to 1.9.4

Release notes of this "Security and build system fixes" release:
https://github.com/open-source-parsers/jsoncpp/releases/tag/1.9.4

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/jsoncpp/jsoncpp.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  8593c1d69e703563d94d8c12244e2e18893eeb9a8a9f8aa3d09a327aa45c8f7d  jsoncpp-1.9.3.tar.gz
+sha256  e34a628a8142643b976c7233ef381457efad79468c67cb1ae0b83a33d7493999  jsoncpp-1.9.4.tar.gz
 sha256  95039d77a20e75b428207740d9a8f97b2dce3c89da4b21f1ad862b5997160e0a  LICENSE

package/jsoncpp/jsoncpp.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-JSONCPP_VERSION = 1.9.3
+JSONCPP_VERSION = 1.9.4
 JSONCPP_SITE = $(call github,open-source-parsers,jsoncpp,$(JSONCPP_VERSION))
 JSONCPP_LICENSE = Public Domain or MIT
 JSONCPP_LICENSE_FILES = LICENSE