utils/grep: update to 2.26

Update grep to upstream release 2.26

Signed-off-by: Paul Wassi <p.wassi@gmx.at>

utils/grep/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=grep
-PKG_VERSION:=2.25
+PKG_VERSION:=2.26
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/grep
-PKG_MD5SUM:=04e96b0e6f0fe6a180ae62c88fcd0af6
+PKG_MD5SUM:=afdd61c7221434722671baf002ac9267
 
 PKG_LICENSE:=GPL-3.0
 PKG_LICENSE_FILES:=COPYING