New signing keys may be required for making 21.0 builds

[petefoth]

See this post in the LOS sub-reddit about the problems with the Android Quarterly update

https://old.reddit.com/r/LineageOS/comments/1bp83tb/is_there_a_new_build_schedule/kylwrcp/

[petefoth]

Asked in Discord what keys are needed: https://discord.com/channels/628008280605589549/653821647102672926/1228574580810055731. The usual helpful reply was 'They've been added to the wiki'. I presume this means the APEX keys mentioned on this wiki page. We don't currently do anything with APEX keys in our builds (as far as I am aware), and 21,0 builds are progressing fine, so we donlt have to do anything immedaitely.

I do need to find out whether we should be doing something extra in our builds, but that can wait :)