package/gnuchess: security bump to version 6.2.9

Fixed potential buffer overflow in pgnload and pgnreplay
(CVE-2021-30184)

https://lists.gnu.org/archive/html/info-gnu-chess/2021-07/msg00000.html
https://git.savannah.gnu.org/cgit/chess.git/tree/NEWS?h=v6.2.9

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 85aab41ef9f818216635c9b0f64bf9c20c176135)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gnuchess/gnuchess.hash

@@ -1,3 +1,3 @@
 # sha256 locally computed
-sha256  d50446cda8012240321da39cddbb4df4d08458a8d538a4738882814139583847  gnuchess-6.2.8.tar.gz
+sha256  ddfcc20bdd756900a9ab6c42c7daf90a2893bf7f19ce347420ce36baebc41890  gnuchess-6.2.9.tar.gz
 sha256  8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING

package/gnuchess/gnuchess.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GNUCHESS_VERSION = 6.2.8
+GNUCHESS_VERSION = 6.2.9
 GNUCHESS_SITE = $(BR2_GNU_MIRROR)/chess
 GNUCHESS_LICENSE = GPL-3.0+
 GNUCHESS_LICENSE_FILES = COPYING