⚡️ Faster unmap for ulid

[dubzzz]

Category:

• ✨ Introduce new features
• 📝 Add or update documentation
• ✅ Add or update tests
• 🐛 Fix a bug
• 🏷️ Add or update types
• ⚡️ Improve performance
• Other(s): ...

Potential impacts:

• Generated values
• Shrink values
• Performance
• Typings
• Other(s): ...

[codesandbox-ci]

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Latest deployment of this branch, based on commit a90fe92:

Sandbox	Source
Vanilla	Configuration
@fast-check/examples	Configuration

[codecov]

Codecov Report

Merging #4091 (a90fe92) into main (096685c) will increase coverage by 0.00%.
The diff coverage is 90.00%.

@@           Coverage Diff           @@
##             main    #4091   +/-   ##
=======================================
  Coverage   94.64%   94.65%           
=======================================
  Files         211      211           
  Lines        5905     5909    +4     
  Branches     1351     1351           
=======================================
+ Hits         5589     5593    +4     
  Misses        300      300           
  Partials       16       16           

Flag	Coverage Δ
unit-tests	94.65% <90.00%> (+<0.01%)	⬆️
unit-tests-16.x-Linux	94.65% <90.00%> (?)
unit-tests-latest-Linux	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...arbitrary/_internals/mappers/UintToBase32String.ts	94.73% <90.00%> (+0.61%)	⬆️