[MRG] fixing the test write parallel

[bruAristimunha]

PR Description

A continuation of the #1469

Merge checklist

Maintainer, please confirm the following before merging.
If applicable:

• All comments are resolved
• This is not your own PR
• All CIs are happy
• PR title starts with [MRG]
• whats_new.rst is updated
• New contributors have been added to CITATION.cff
• PR description includes phrase "closes <#issue-number>"

[bruAristimunha]

@drammock FYI

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.94%. Comparing base (60830be) to head (49b6b5e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1473   +/-   ##
=======================================
  Coverage   96.94%   96.94%           
=======================================
  Files          43       43           
  Lines       10074    10077    +3     
=======================================
+ Hits         9766     9769    +3     
  Misses        308      308           

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[larsoner]

Thanks @bruAristimunha !

[drammock]

I think this was merged a bit hastily. This PR added the test dependency https://github.com/pytest-dev/pytest-rerunfailures, but MNE-Python is using https://github.com/box/flaky. Unfortunately both use @pytest.mark.flaky as the mark name, but with different params. I feel pretty strongly that they should both be using the same one; otherwise it will be a bit of a headache for devs who work on both projects to have one environment with 2 pytest plugins that both define the same mark name. @larsoner should we:

1. switch MNE-Python to pytest-rerunfailures (on the grounds that it's developed by pytest-dev org, so in some sense "blessed" and likely to be stable)
2. switch MNE-BIDS to use flaky (because it's what we've been using in MNE-Python and it's been fine)

[larsoner]

I figured the one here was better because its pypistats downloads were 5x higher. If it's pytest-dev developed, even better! We should switch MNE-Python