https://learn.microsoft.com/en-us/officeupdates/current-channel 未更新
https://learn.microsoft.com/en-us/officeupdates/current-channel-preview 未更新
5/21 追記
https://learn.microsoft.com/en-us/officeupdates/current-channel#version-2605-may-20
https://learn.microsoft.com/en-us/officeupdates/current-channel-preview#version-2605-may-20
追記終わり
