ci: Ensure environment variables are set

[JDBetteridge]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.26%. Comparing base (0164e85) to head (736a181).

Files with missing lines	Patch %	Lines
conftest.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3045      +/-   ##
==========================================
- Coverage   84.26%   84.26%   -0.01%     
==========================================
  Files         258      258              
  Lines       56982    56985       +3     
  Branches     4854     4856       +2     
==========================================
+ Hits        48016    48018       +2     
- Misses       8139     8141       +2     
+ Partials      827      826       -1     

Flag	Coverage Δ
pytest-gpu-aomp-amdgpuX	68.56% <0.00%> (-0.01%)	⬇️
pytest-gpu-gcc-	79.02% <0.00%> (-0.01%)	⬇️
pytest-gpu-icx-	78.95% <0.00%> (-0.03%)	⬇️
pytest-gpu-nvc-nvidiaX	69.13% <0.00%> (+<0.01%)	⬆️

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