other: Increased pytest and related packages version in search service

[jsnowacki]

Summary of Changes

Pytest version increase as it was a couple of major versions behind and works fine with the new one without any changes.

Tests

Run standard pytest.

Documentation

It was substantially behind the current version

CheckList

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[mgorsk1]

there is refactor underway which would take care of it: #1163 do you think it's ok to wait for it?

[jsnowacki]

@mgorsk1 Yes, I just followed up the recent changes 'cause I forgot about it really. If it's coming, it's fine, I don't need it right away.