ci: run only external deps tests

[seqre]

This is done to fix https://github.com/cot-rs/cot/actions/runs/12728982874/job/35480378199#step:8:441

Also, it runs only ignored tests to speed up the pipeline.

[m4tx]

Why would this fix the issue? The tables/databases are not shared between tests, so I can't see why disabling parallelization would fix this. I was suspecting some data race or something similar when connecting to Postgres (removing the database is done from a separate connection, so I thought there might be something funky going on here).

[m4tx]

As suspected, I just got the same error when testing locally with --run-ignored only --test-threads 1. Admittedly though, it took like hundreds of test suite re-runs in a while true loop.

It would be nice to either find out the real cause of the issue, or maybe just live in ignorance and add WITH (FORCE) to the DROP DATABASE?

--run-ignored only sounds like a good change, though.

[codecov]

Codecov Report

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[seqre]

I get it now, I think we should merge this PR as is and create a task to investigate that issue separately. What do you think @m4tx?

[m4tx]

I get it now, I think we should merge this PR as is and create a task to investigate that issue separately. What do you think @m4tx?

I think there are two sensible solutions for now:

1. Leave the PR as is and merge it
2. Add WITH (FORCE) to the DROP DATABASE statement (perhaps it's the way to go? I'm not sure if there's much value in investigating why this fails)

If you feel like 2 is not sensible or don't have time to do that, we can just merge this now.

[seqre]

I think it's worth playing around with it and trying to figure that out, if possible with minor effort. I've created a ticket to track it: https://github.com/orgs/cot-rs/projects/2/views/7?pane=issue&itemId=94050368 If no root cause is found, we can always default to that WITH (FORCE) as a last resort.

In the meantime, I'll merge this.