ffmpeg: update to 4.2.3

Signed-off-by: Rosen Penev <rosenp@gmail.com>

multimedia/ffmpeg/Makefile

@@ -9,12 +9,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ffmpeg
-PKG_VERSION:=4.2.2
-PKG_RELEASE:=4
+PKG_VERSION:=4.2.3
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://ffmpeg.org/releases/
-PKG_HASH:=cb754255ab0ee2ea5f66f8850e1bd6ad5cac1cd855d0a2f4990fb8c668b0d29c
+PKG_HASH:=9df6c90aed1337634c1fb026fb01c154c29c82a64ea71291ff2da9aacb9aad31
 PKG_MAINTAINER:=Ted Hess <thess@kitschensync.net>, \
 		Ian Leonard <antonlacon@gmail.com>