(1) Upgrade to CockroachDB v20.1 [0]

[johnantonn]

Currently there's an issue with job operations like DROP TABLE that hang with the message "Waiting For GC TTL" which, according to:

cockroachdb/cockroach#40411

has been resolved in the latest version of cockroach.

Guide:

https://www.cockroachlabs.com/docs/stable/upgrade-cockroach-version.html