package/libass: bump version to 0.15.1

Release notes: https://github.com/libass/libass/releases/tag/0.15.1

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/libass/libass.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  9f09230c9a0aa68ef7aa6a9e2ab709ca957020f842e52c5b2e52b801a7d9e833  libass-0.15.0.tar.xz
+sha256  1cdd39c9d007b06e737e7738004d7f38cf9b1e92843f37307b24e7ff63ab8e53  libass-0.15.1.tar.xz
 sha256  f7e30699d02798351e7f839e3d3bfeb29ce65e44efa7735c225464c4fd7dfe9c  COPYING

package/libass/libass.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBASS_VERSION = 0.15.0
+LIBASS_VERSION = 0.15.1
 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.