fix timezone issue with ECoG data

[Aaronearlerichardson]

PR Description

• fixes Failing to load clinical Brainvision formatted ECoG data in MNE tutorial due to timezones #1398

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>"

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.94%. Comparing base (1587130) to head (b82e298).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1399      +/-   ##
==========================================
- Coverage   97.41%   96.94%   -0.47%     
==========================================
  Files          41       41              
  Lines        9371     9371              
==========================================
- Hits         9129     9085      -44     
- Misses        242      286      +44     

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[sappelhoff]

the general CI has now been fixed, so failures here are related to the present commit.

[sappelhoff]

@Aaronearlerichardson if you want to get this change merged, you would need to look into why the CIs are failing. 🙂

[sappelhoff]

... cc @bruAristimunha in case you are still hunting for issues and PRs that you can take care of 😉

[bruAristimunha]

hey @Aaronearlerichardson,

I can support you with this pr. Can you give me permission into your mne-bids fork? You will need to add me as a collaborator in the repository, please.