Update PolicyEngine bundle to 5.2.0

[policyengine]

Summary

Update PolicyEngine .py bundle from 4.20.3 to 5.2.0.

Bundled versions

• policyengine: 5.2.0
• policyengine-core: 3.30.1
• policyengine-us: 1.764.6
• policyengine-uk: 2.90.2

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[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.46%. Comparing base (e117906) to head (fffdde1).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
policyengine_api/constants.py	75.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3806      +/-   ##
==========================================
- Coverage   85.48%   85.46%   -0.03%     
==========================================
  Files          95       95              
  Lines        5897     5902       +5     
  Branches     1030     1032       +2     
==========================================
+ Hits         5041     5044       +3     
- Misses        559      560       +1     
- Partials      297      298       +1     

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