Update pytest on destinations

[natikgadzhi]

A lot of destinations are stuck on pytest 6.2, which is causing a bunch of high severity security alerts on github.

Fixing them should be easy:

1. Search and replace: within ./airbyte-integrations/connectors/destinations-*/pyproject.toml find pytest = 6\.2\..* (pseudocode regex) and replace with ^8.3.1 or whatever the recent one is.
2. Bump the version of the affected connectors. The easiest way to do it is to run airbyte-ci connectors --modified bump-version patch "Update test dependencies".
3. Then, make a pull request with them. A single PR with all of them is probably okay.

This is not very complex work, but it gives us nice security cleanup.