Append change log for 12.2-beta2. (cherry picked from commit 3b8947a)
Append change log for 12.2-beta2.
(cherry picked from commit 3b8947a)

UweTrottmann/SeriesGuide,UweTrottmann/SeriesGuide,hoanganhx86/SeriesGuide,epiphany27/SeriesGuide,0359xiaodong/SeriesGuide,artemnikitin/SeriesGuide,r00t-user/SeriesGuide