fix tests

[dpprdan]

This PR updates/fixes tests:

1. use examples from Brest instead of Nantes, because some examples don't work anymore due to changes in the OpenCage responses, cf. issue with address_only? #160
2. update vignettes to changed API responses
3. remove tests w.r.t. min_confidence, cf. no results with limit=1 and min_confidence=7 #161, (this is the first part of drop min_confidence #162)
4. update snapshots

The style workflow is fixed in #164.

[dpprdan]

Turns out some API responses used in the vignettes changed as well, so I'll update those first, hoping we'll have less diff clutter when doing code changes.

[dpprdan]

The examples in the vignettes should be fine again.

[maelle]

Thank you!

[dpprdan]

We're ready to merge then, @maelle?
(I was looking for some "@maelle approved" message, but maybe I'm confusing the GitHub with the GitLab UI? 😕)

Update: looking at past PRs I can confirm that I am the confused one. 😬 Nevermind then! 😄

[maelle]

I think I could have approved, I only commented because it seemed preposterous to give approval somehow, as you're the maintainer and know best! 😁