bash: bump to version 4.4.18

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/bash/bash.hash

@@ -1,4 +1,4 @@
 # Locally calculated after checking pgp signature from
-# http://ftp.gnu.org/gnu/bash/bash-4.4.12.tar.gz.sig
-sha256 57d8432be54541531a496fd4904fdc08c12542f43605a9202594fa5d5f9f2331	bash-4.4.12.tar.gz
+# http://ftp.gnu.org/gnu/bash/bash-4.4.18.tar.gz.sig
+sha256 604d9eec5e4ed5fd2180ee44dd756ddca92e0b6aa4217bbab2b6227380317f23	bash-4.4.18.tar.gz
 sha256 8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903	COPYING

package/bash/bash.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-BASH_VERSION = 4.4.12
+BASH_VERSION = 4.4.18
 BASH_SITE = $(BR2_GNU_MIRROR)/bash
 # Build after since bash is better than busybox shells
 BASH_DEPENDENCIES = ncurses readline host-bison \