Could a staff member move me to the latest Postgres version? Anytime is fine and its fine if it wipes any data in there. I sent an email to support just now as well. I am running into the same issue when I moved to Django 3.x. My database has already been wiped and im stuck on a migration error because of the dropped support for 9.4.
Though I am glad I ran into this because it seems Postgres has a Severe issue: CVE-2020-25695 affecting even more recent versions than 9.4 which is good to know.
And it is mentioned on the Postgres homepage that everyone should upgrade as soon as possible.
The PostgreSQL Global Development Group has released an update to all
supported versions of our database system, including 13.1, 12.5,
11.10, 10.15, 9.6.20, and 9.5.24. This release closes three security vulnerabilities and fixes over 65 bugs reported over the last three
months.
Due to the nature of CVE-2020-25695, we advise you to update as soon
as possible.
Additionally, this is the second-to-last release of PostgreSQL 9.5. If
you are running PostgreSQL 9.5 in a production environment, we suggest
that you make plans to upgrade.