use miniforge instead of mambaforge in CI

[keiyamamo]

ref: https://conda-forge.org/news/2024/07/29/sunsetting-mambaforge/

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.58%. Comparing base (6ea971a) to head (eb7c9a3).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #193      +/-   ##
==========================================
+ Coverage   78.54%   78.58%   +0.03%     
==========================================
  Files          32       32              
  Lines        3841     3848       +7     
==========================================
+ Hits         3017     3024       +7     
  Misses        824      824              

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