Make the makefile work with Poetry v2 as well as v2

[ptgolden]

Closes #962

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.97%. Comparing base (b953722) to head (96aee61).
Report is 46 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #964      +/-   ##
==========================================
+ Coverage   70.75%   70.97%   +0.21%     
==========================================
  Files          91       91              
  Lines        3084     3128      +44     
==========================================
+ Hits         2182     2220      +38     
- Misses        902      908       +6     

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[amc-corey-cox]

#966 is a duplicate.

[amc-corey-cox]

@kevinschaper this is causing docs not to build now for the PR I just merged so we should try to get this in soon.