Avoid deprecation warnings on GPU CI for now

[vchuravy]

No description provided.

[github-actions]

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Created with ❤️ by the Trixi.jl community.

[ranocha]

I trust you that this fixes some deprecation warnings. Can you please file an issue to remind us to remove this hotfix?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.13%. Comparing base (2e5ed0b) to head (d30c8d3).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3001   +/-   ##
=======================================
  Coverage   97.13%   97.13%           
=======================================
  Files         625      625           
  Lines       48514    48514           
=======================================
  Hits        47122    47122           
  Misses       1392     1392           

Flag	Coverage Δ
unittests	97.13% <ø> (ø)

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[vchuravy]

The deprecation warnings are why #2997 is currently failing on buildkite