feat: automate pg_upgrade testing

[pcnc]

What kind of change does this PR introduce?

Bug fix, feature, docs update, ...

What is the current behavior?

Please link any relevant issues here.

What is the new behavior?

Feel free to include screenshots if it includes visual changes.

Additional context

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[notion-workspace]

Automate pg_upgrade testing

[darora]

Sorry I missed this earlier - gave it a quick skim and looks great. Any changes needed to bring it up to speed?

@supabase/postgres any concerns with this change?

[olirice]

lgtm, @soedirgo could you give this a once over?

[soedirgo]

Looks great! 👍I guess we don't need to include Testinfra tests since this should only affect PG stuff?

[steve-chavez]

Is it possible to run these tests locally?

[pcnc]

Sorry I missed this earlier - gave it a quick skim and looks great. Any changes needed to bring it up to speed?

@supabase/postgres any concerns with this change?

Need to follow up on this and merge the more recent upgrade script changes into it.
Also want to add tests around encrypted columns (since those are more critical), some extensions such as ltree now that it is possibly problematic, and have pick it up the last ~5 PG releases to cover, besides the configured baseline

@steve-chavez running debug.sh would run this locally, but it requires the scripts and binaries stored in the dev account. I’ll add some docs around this and ping the team in Slack to confirm that everybody can run it

[pcnc]

Looks great! 👍I guess we don't need to include Testinfra tests since this should only affect PG stuff?

Yep! This would run as a parallel check to those, so no dependency between the two workflows