grep: bump to version 2.24

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/grep/grep.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking signature
-sha256	54fc478ee1ce17780109820ef30730c9e18715a949f7d5c6afc673adb2a56ecf	grep-2.23.tar.xz
+sha256	f248beb9098c5aab94d2fdd03b5a21d705e5ba8a3ce4d8c9f607a670498eec14	grep-2.24.tar.xz

package/grep/grep.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GREP_VERSION = 2.23
+GREP_VERSION = 2.24
 GREP_SITE = $(BR2_GNU_MIRROR)/grep
 GREP_SOURCE = grep-$(GREP_VERSION).tar.xz
 GREP_LICENSE = GPLv3+