package/pngquant: bump version to 2.12.3

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/pngquant/pngquant.hash

@@ -1,5 +1,5 @@
 # From https://pngquant.org/releases.html
-sha1 24efa42105bf3d8d0f4cf699053d2701ea787bd5  pngquant-2.12.2-src.tar.gz
+sha1 e160eade5897b1c3d991e57b528b4f338674af88  pngquant-2.12.3-src.tar.gz
 # Locally computed
-sha256 bb031c48039ee73ea0e60709bb9ab80c55bfa3a5920b798ea37a03f2757b099c  pngquant-2.12.2-src.tar.gz
+sha256 8bb076832a3f1c826393f4be62df8b637dfd6493b13d5839ad697a8a80ccf95b  pngquant-2.12.3-src.tar.gz
 sha256 e4f467f7abf860b4e620f5f60fdd88bc3a63a0fdb98a481fb002b5e511c9b826  COPYRIGHT

package/pngquant/pngquant.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-PNGQUANT_VERSION = 2.12.2
+PNGQUANT_VERSION = 2.12.3
 PNGQUANT_SOURCE = pngquant-$(PNGQUANT_VERSION)-src.tar.gz
 PNGQUANT_SITE = https://pngquant.org
 PNGQUANT_LICENSE = GPL-3.0+