Update of debian-archive-keyring in stretch?

[Raphael Hertzog <hertzog@debian.org>]

[ Ccing debian-release in case they have some advice / concerns to express ]

Hello LTS team,

it would be nice if we could get an update of debian-archive-keyring
in stretch to add the bullseye key just like it has been done in buster a
while ago:
https://tracker.debian.org/news/1236764/accepted-debian-archive-keyring-20191deb10u1-source-all-into-proposed-updates-stable-new-proposed-updates/

The missing key creates problems for example with simple-cdd:
https://bugs.debian.org/992966

Thank you!
-- 
Raphaël Hertzog