package/samba4: security bump to version 4.9.8

Fixes the following security issues:

CVE-2018-16860: The checksum validation in the S4U2Self handler in the
embedded Heimdal KDC did not first confirm that the checksum was keyed,
allowing replacement of the requested target (client) principal.

For more details, see the advisory:
https://www.samba.org/samba/security/CVE-2018-16860.html

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/samba4/samba4.hash

@@ -1,4 +1,4 @@
 # Locally calculated after checking pgp signature
-# https://download.samba.org/pub/samba/stable/samba-4.9.7.tar.asc
-sha256 44e5bc58dcae6d86ca8d5f269fa927f20ff91bce97cde86fe4e83addcb89c001  samba-4.9.7.tar.gz
+# https://download.samba.org/pub/samba/stable/samba-4.9.8.tar.asc
+sha256 82ebb7c3f1847c39341dd97ff8b73f40fa83f5f794daeceb80f3c349ace3cf56  samba-4.9.8.tar.gz
 sha256 8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING

package/samba4/samba4.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SAMBA4_VERSION = 4.9.7
+SAMBA4_VERSION = 4.9.8
 SAMBA4_SITE = https://download.samba.org/pub/samba/stable
 SAMBA4_SOURCE = samba-$(SAMBA4_VERSION).tar.gz
 SAMBA4_INSTALL_STAGING = YES