package/samba4: bump version to 4.5.8

Version bump includes a regression fix:
https://www.samba.org/samba/history/samba-4.5.8.html

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit 67c25f897dd61802ea97c83619ca5dace8ba7c27)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/samba4/samba4.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256	ac70f09af80639d8189e1b9bc0a554841ee44df2b1ef58e7e682ad5400fd9400	samba-4.5.7.tar.gz
+sha256 f63b656d8823a280c50c9dbd6b692816cd7a88adfe9b47997ce697fd75bf81f0  samba-4.5.8.tar.gz

package/samba4/samba4.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SAMBA4_VERSION = 4.5.7
+SAMBA4_VERSION = 4.5.8
 SAMBA4_SITE = https://download.samba.org/pub/samba/stable
 SAMBA4_SOURCE = samba-$(SAMBA4_VERSION).tar.gz
 SAMBA4_INSTALL_STAGING = YES