package/enlightenment: bump to 0.21.8

See https://www.enlightenment.org/news/e0.21.8_release

"We are aware of a issue when running su/sudo under kernel 4.11 the fix
for this issue will be in an upcoming kernel release rather then here
see (https://phab.enlightenment.org/T5470)"

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/enlightenment/enlightenment.hash

@@ -1,2 +1,2 @@
-# From https://www.enlightenment.org/news/e-0.21.7-release
-sha256	7643f7fd4aadaca44c886f21063987624c50d4c50266e87600e902a59b7c76f7 	enlightenment-0.21.7.tar.xz
+# From https://www.enlightenment.org/news/e0.21.8_release
+sha256	fac21c5fb9cab89fb717b3577f7980fd0644ff1e94b144a55ba841116e8c5232 	enlightenment-0.21.8.tar.xz

package/enlightenment/enlightenment.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-ENLIGHTENMENT_VERSION = 0.21.7
+ENLIGHTENMENT_VERSION = 0.21.8
 ENLIGHTENMENT_SOURCE = enlightenment-$(ENLIGHTENMENT_VERSION).tar.xz
 ENLIGHTENMENT_SITE = http://download.enlightenment.org/rel/apps/enlightenment
 ENLIGHTENMENT_LICENSE = BSD-2-Clause