Update Environment Configuration and Dependencies

[sreekarreddydfci]

1. Excluded Python version and python-spams as dependencies in the environment.yml file.
2. Added python-spams dependency outside the environment.yml file.
3. Implemented mamba for environment setup.

[codecov-commenter]

Codecov Report

Merging #354 (b630aec) into master (9b6ed8e) will increase coverage by 0.07%.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##           master     #354      +/-   ##
==========================================
+ Coverage   86.37%   86.45%   +0.07%     
==========================================
  Files          27       27              
  Lines        2503     2503              
==========================================
+ Hits         2162     2164       +2     
+ Misses        341      339       -2     

Impacted Files	Coverage Δ
pathml/_version.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

[jacob-rosenthal]

Looks good. Tests pass and actions run much faster now.
No changes to the code base so ok to merge to master I think in this case, to fix the broken test workflows