Monitor test duration

[tfardet]

I'd propose to add --durations=0 to pytest so we know how long the tests take to run and we can more easily figure out where changes in test durations come from (cf. recent events).

PS: @hadrilec I noticed that tests are again checking all python versions (d5be92b), is that on purpose?

[hadrilec]

I agree with the proposal, I splitted the tests accross several python versions again as I tried to get the total test duration down

[tfardet]

OK, good, you can just include it in any of the open PR, then (changing pkgTests_pull_requests.yml#L56 and pkgTests.yml#L54)