fix: ensure the timestamp validation checks the upper limit given in the ulid spec

[somnam]

#26 (comment)

Based on a similar approach in ulid-py

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.61%. Comparing base (419116f) to head (0b82942).

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #27      +/-   ##
==========================================
- Coverage   99.61%   99.61%   -0.01%     
==========================================
  Files           4        4              
  Lines         262      259       -3     
  Branches       66       66              
==========================================
- Hits          261      258       -3     
  Partials        1        1              

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[mdomke]

@somnam thank you very much! I guess I was too much focused on creating ULIDs with legit datetime values, so that I didn't pay enough attention to the specification.

[somnam]

@somnam thank you very much!

Thanks a lot for the merge and quick release!