pat: correct numeric matching

[timbray]

addresses #27

This is now consistent with current Ruler behavior except for the bug reported in aws/event-ruler#163, which does not occur in Quamina.

[timbray]

Drat. Pulled in math/rand/v2, not realizing it's a go v1.22+ thing. I wish golangci-lint would catch this on my desktop. I guess the correct thing to do is roll back to math/rand which will cause CI complaints but those can be ignored. Fortunately Quamina doesn't need secure random numbers, they're just for test data.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 93.93939% with 6 lines in your changes missing coverage. Please review.

Project coverage is 96.23%. Comparing base (b1c32f5) to head (49e80c7).

Files	Patch %	Lines
value_matcher.go	84.61%	5 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #329      +/-   ##
==========================================
- Coverage   96.48%   96.23%   -0.26%     
==========================================
  Files          18       18              
  Lines        1764     1804      +40     
==========================================
+ Hits         1702     1736      +34     
- Misses         35       40       +5     
- Partials       27       28       +1     

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[timbray]

Hm, those benchmarks took me by surprise. Will need to study some more. Converting to draft PR.