package/systemd: bump to 257.7

Changes:
https://github.com/systemd/systemd/compare/v257.5...v257.7

Signed-off-by: Marcus Hoffmann <buildroot@bubu1.eu>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/systemd/systemd.hash

@@ -1,5 +1,5 @@
 # sha256 locally computed
-sha256  4d65f9482608cf9f7823df42a6d7796f0e0dfcfb94301df75effff86d40da33e  systemd-257.5.tar.gz
+sha256  70ecf759260549486045d065555d2f8a0ac0b8523d8f58227559fbd6d7523b08  systemd-257.7.tar.gz
 sha256  ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  LICENSE.GPL2
 sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  LICENSE.LGPL2.1
 sha256  c9e7bf5b7c243c719b8b43c36158effb9b54c5e80abc9d82e4b2d4b2a4aa64ad  LICENSES/alg-sha1-public-domain.txt

package/systemd/systemd.mk

@@ -19,7 +19,7 @@
 # - Diff sysusers.d with the previous version
 # - Diff factory/etc/nsswitch.conf with the previous version
 #   (details are often sprinkled around in README and manpages)
-SYSTEMD_VERSION = 257.5
+SYSTEMD_VERSION = 257.7
 SYSTEMD_SITE = $(call github,systemd,systemd,v$(SYSTEMD_VERSION))
 SYSTEMD_LICENSE = \
 	LGPL-2.1+, \