Test postgres connection on github-action

[brunolnetto]

Hi there,

I wrote a small python library to access multiple postgres databases at once called pgbase. After writing a bunch of tests, I want to integrate the coverage upload to CI on github-actions. I found your action useful. Unfortunately, I am unable to connect to created cluster because connection to server at "localhost" (::1), port 5432 failed: FATAL: password authentication failed for user "postgres". I would like to call for help on connection task, even for reviewing or reproducing the tests locally to see them running without error, but failing remotely.

[1] https://github.com/brunolnetto/pgbase/blob/main/.github/workflows/upload-test.yaml