package/libvpx: bump version to 1.15.0

Release notes:
https://chromium.googlesource.com/webm/libvpx/+/refs/tags/v1.15.0
https://chromium.googlesource.com/webm/libvpx/+/refs/tags/v1.14.1
https://chromium.googlesource.com/webm/libvpx/+/refs/tags/v1.14.0

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/libvpx/libvpx.hash

@@ -1,4 +1,4 @@
 # Locally computed:
-sha256  00dae80465567272abd077f59355f95ac91d7809a2d3006f9ace2637dd429d14  libvpx-1.13.1.tar.gz
+sha256  e935eded7d81631a538bfae703fd1e293aad1c7fd3407ba00440c95105d2011e  libvpx-1.15.0.tar.gz
 sha256  8267348d5af1262c11d1a08de2f5afc77457755f1ac658627dd9acf71011d615  LICENSE
 sha256  cc3273e0694ea5896145e0677699b53471b03ea43021ddc50e7923fbb9f5023c  PATENTS

package/libvpx/libvpx.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBVPX_VERSION = 1.13.1
+LIBVPX_VERSION = 1.15.0
 LIBVPX_SITE = $(call github,webmproject,libvpx,v$(LIBVPX_VERSION))
 LIBVPX_LICENSE = BSD-3-Clause
 LIBVPX_LICENSE_FILES = LICENSE PATENTS