Fix random strategy seeding

[younik]

This was set as the same seed for each agent in a group, but at this scale, we only have one group, so the sampling seeding was the same for every agent

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.31%. Comparing base (4d84171) to head (bf63648).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #471   +/-   ##
=======================================
  Coverage   74.31%   74.31%           
=======================================
  Files          47       47           
  Lines        6960     6960           
  Branches      824      824           
=======================================
  Hits         5172     5172           
  Misses       1478     1478           
  Partials      310      310           

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[josephdviviano]

nice catch! also argh!