Update Conda channels to prioritize conda-forge over nvidia

[cwharris]

Description

Closes #435
Closes #424
Closes #423
Closes #422

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[mdemoret-nv]

/merge

[codecov]

Codecov Report

Merging #436 (b12cb3b) into branch-24.03 (00dfd7b) will decrease coverage by 0.03%.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##           branch-24.03     #436      +/-   ##
================================================
- Coverage         74.03%   74.00%   -0.03%     
================================================
  Files               394      394              
  Lines             13955    13955              
  Branches           1053     1053              
================================================
- Hits              10332    10328       -4     
- Misses             3623     3627       +4     

Flag	Coverage Δ
cpp	70.48% <ø> (-0.03%)	⬇️
py	42.61% <ø> (-0.01%)	⬇️

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see 3 files with indirect coverage changes

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