Update changelog for v2.2.5 and v2.1.9
Update changelog for v2.2.5 and v2.1.9

Change-Id: Id3e2167c6df658b05cb3bd011e634322dbab7bce

shaka-project/shaka-player,vimond/shaka-player,TheModMaker/shaka-player,shaka-project/shaka-player,TheModMaker/shaka-player,tvoli/shaka-player,vimond/shaka-player,tvoli/shaka-player,TheModMaker/shaka-player,TheModMaker/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,vimond/shaka-player,tvoli/shaka-player,shaka-project/shaka-player