Update changelog for v2.4.2 and v2.3.10
Update changelog for v2.4.2 and v2.3.10

Change-Id: Ie99c0927d2b67714f790250769d5470bebfe7776

shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player