Update changelog for v2.4.5
Update changelog for v2.4.5

Change-Id: I0bf47c2749d9ec4be03c5d9854bde8e671708fcf

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