Ubuntu 20.10 (Groovy Gorilla) should likely be added to distros

[jryans]

Beta version was recently released: https://lists.ubuntu.com/archives/ubuntu-announce/2020-October/000262.html

[richvdh]

ah I guess we should do this for 1.21.0.

[anoadragon453]

Hopefully this is just added a line to

synapse/scripts-dev/build_debian_packages

Lines 20 to 28 in 9c0b168

	DISTS = (
	"debian:stretch",
	"debian:buster",
	"debian:bullseye",
	"debian:sid",
	"ubuntu:xenial",
	"ubuntu:bionic",
	"ubuntu:focal",
	)

?

[jryans]

Sounds correct based on previous changes of this type.

[richvdh]

https://gitlab.matrix.org/new-vector/internal/-/wikis/Synapse-Debian-Packages#adding-a-new-distribution

[erikjohnston]

Done by #8475