[macOS] Switch Xamarin bundle to the latest one for 10.15#1879

Merged

maxim-lobanov merged 2 commits intoactions:mainfrom miketimofeev:change-default-xamarin-bundle-for-xcode12

Oct 23, 2020

+2-2

Commits on Oct 22, 2020

change default bundle to the latest one
Mikhail Timofeev
committed
remove 12.1 from macos 11
Mikhail Timofeev
committed