package/libass: bump version to 0.17.3

Release notes:
https://github.com/libass/libass/releases/tag/0.17.2
https://github.com/libass/libass/releases/tag/0.17.3

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

package/libass/libass.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  f0da0bbfba476c16ae3e1cfd862256d30915911f7abaa1b16ce62ee653192784  libass-0.17.1.tar.xz
+sha256  eae425da50f0015c21f7b3a9c7262a910f0218af469e22e2931462fed3c50959  libass-0.17.3.tar.xz
 sha256  f7e30699d02798351e7f839e3d3bfeb29ce65e44efa7735c225464c4fd7dfe9c  COPYING

package/libass/libass.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBASS_VERSION = 0.17.1
+LIBASS_VERSION = 0.17.3
 LIBASS_SOURCE = libass-$(LIBASS_VERSION).tar.xz
 # Do not use the github helper here, the generated tarball is *NOT*
 # the same as the one uploaded by upstream for the release.