Use getParameterCount rather than getParameterTypes where possible

[snuyanzin]

Use getParameterCount rather than getParameterTypes since getParameterTypes each time clones an array

[codecov-commenter]

Codecov Report

Merging #436 (ce20260) into main (feac900) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main     #436      +/-   ##
============================================
- Coverage     93.95%   93.93%   -0.03%     
+ Complexity     2006     2005       -1     
============================================
  Files           222      222              
  Lines          4021     4023       +2     
  Branches        384      384              
============================================
+ Hits           3778     3779       +1     
- Misses          146      150       +4     
+ Partials         97       94       -3     

Impacted Files	Coverage Δ
.../java/net/datafaker/service/FakeValuesService.java	87.36% <100.00%> (+0.05%)	⬆️
.../main/java/net/datafaker/service/FakerContext.java	84.61% <0.00%> (-2.57%)	⬇️

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