Fix purim in leap year

[benyaming]

No description provided.

[codecov]

Codecov Report

Merging #44 (0cae786) into master (c1bfbb3) will decrease coverage by 0.11%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##            master      #44      +/-   ##
===========================================
- Coverage   100.00%   99.88%   -0.12%     
===========================================
  Files           23       23              
  Lines          841      847       +6     
===========================================
+ Hits           841      846       +5     
- Misses           0        1       +1     

Impacted Files	Coverage Δ
test/test_engine/test_holiday.py	100.00% <100.00%> (ø)
zmanim_api/engine/holidays.py	99.22% <100.00%> (-0.78%)	⬇️

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