Minor fix to support CGNS 4.4

[eirikurj]

Purpose

The CGNS library removed legacy constants. This change is backwards compatible with the CGNS version we currently support.

Expected time until merged

No rush

Type of change

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (non-backwards-compatible fix or feature)
• [ ] Code style update (formatting, renaming)
• [x] Refactoring (no functional changes, no API changes)
• [ ] Documentation update
• [x] Maintenance update
• [ ] Other (please describe)

Testing

Checklist

• [ ] I have run flake8 and black to make sure the Python code adheres to PEP-8 and is consistently formatted
• [ ] I have formatted the Fortran code with fprettify or C/C++ code with clang-format as applicable
• [ ] I have run unit and regression tests which pass locally with my changes
• [ ] I have added new tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation

[codecov[bot]]

Codecov Report

Merging #28 (fd6fd8c) into main (e32268d) will not change coverage. The diff coverage is n/a.

:exclamation: Current head fd6fd8c differs from pull request most recent head 28b017c. Consider uploading reports for the commit 28b017c to get more accurate results

@@           Coverage Diff           @@
##             main      #28   +/-   ##
=======================================
  Coverage   50.11%   50.11%           
=======================================
  Files           5        5           
  Lines        1688     1688           
=======================================
  Hits          846      846           
  Misses        842      842           

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[eirikurj]

I believe @sseraj was going to submit a PR with updated Tapenade

[sseraj]

The Tapenade PR is up at #29