package/z3: bump to version 4.12.0

For change log since v4.11.2, see:
- https://github.com/Z3Prover/z3/releases/tag/z3-4.12.0

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/z3/z3.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  e3a82431b95412408a9c994466fad7252135c8ed3f719c986cd75c8c5f234c7e  z3-4.11.2.tar.gz
+sha256  5f575f0a3950760436217da1cc1a714569b6d4f664a75bb6775876328cf0a580  z3-4.12.0.tar.gz
 sha256  e617cad2ab9347e3129c2b171e87909332174e17961c5c3412d0799469111337  LICENSE.txt

package/z3/z3.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-Z3_VERSION = 4.11.2
+Z3_VERSION = 4.12.0
 Z3_SITE = $(call github,Z3Prover,z3,z3-$(Z3_VERSION))
 Z3_LICENSE = MIT
 Z3_LICENSE_FILES = LICENSE.txt