Update to use new KCL API

[nrc]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 72.18%. Comparing base (b87927e) to head (aa9ecc7).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/iostreams.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1067      +/-   ##
==========================================
- Coverage   72.19%   72.18%   -0.02%     
==========================================
  Files          36       36              
  Lines        6640     6641       +1     
==========================================
  Hits         4794     4794              
- Misses       1846     1847       +1     

Flag	Coverage Δ
unittests	72.18% <66.66%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[greg-kcio]

adding Jess and Adam as reviewers since historically they maintain the CLI