package/memtester: bump version to 4.7.1

For change log, see:
https://pyropus.ca./software/memtester/CHANGELOG

Version 4.7.1 fixes compile error with stricter C23/gcc-15 due to
incompatible type declaration.

Fixes:
https://autobuild.buildroot.org/results/6d4d4e8ca4269a3d8f795c7c186ef70411f2dc79/build-end.log

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/memtester/memtester.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  1c5fc2382576c084b314cfd334d127a66c20bd63892cac9f445bc1d8b4ca5a47  memtester-4.5.1.tar.gz
+sha256  e427de663f7bd22d1ebee8af12506a852c010bd4fcbca1e0e6b02972d298b5bb  memtester-4.7.1.tar.gz
 sha256  dcc100d4161cc0b7177545ab6e47216f84857cda3843847c792a25289852dcaa  COPYING

package/memtester/memtester.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MEMTESTER_VERSION = 4.5.1
+MEMTESTER_VERSION = 4.7.1
 MEMTESTER_SITE = http://pyropus.ca/software/memtester/old-versions
 MEMTESTER_LICENSE = GPL-2.0
 MEMTESTER_LICENSE_FILES = COPYING