package/swipl: bump version to 9.2.8

For change log since version 9.2.7, see:
https://www.swi-prolog.org/ChangeLog?branch=stable&from=9.2.7&to=9.2.8

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/swipl/swipl.hash

@@ -1,4 +1,4 @@
 # From https://www.swi-prolog.org/download/stable
-sha256  fd4126f047e0784112741a874e2f7f8c68b5edd6426ded621df355c62d18c96f  swipl-9.2.7.tar.gz
+sha256  b331637a57c913c49edcfcb10ddcf6c031278ce93d2411d54542778531abb5c7  swipl-9.2.8.tar.gz
 # Locally calculated
 sha256  770594d0f4463b71f1485f00e4bc5cf4b6f667d62ef6bc9bde2fee236541992a  LICENSE

package/swipl/swipl.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SWIPL_VERSION = 9.2.7
+SWIPL_VERSION = 9.2.8
 SWIPL_SITE = https://www.swi-prolog.org/download/stable/src
 SWIPL_LICENSE = BSD-2-Clause
 SWIPL_LICENSE_FILES = LICENSE