Use thread-safe random implementation

[maratik123]

Use thread safe random implementation for generating numbers (ThreadLocalRandom.current() instead of new Random())

[codecov-io]

Codecov Report

Merging #260 into develop will not change coverage. The diff coverage is 100%.

@@            Coverage Diff             @@
##             develop     #260   +/-   ##
==========================================
  Coverage      90.38%   90.38%           
  Complexity       576      576           
==========================================
  Files             42       42           
  Lines           1727     1727           
  Branches         345      345           
==========================================
  Hits            1561     1561           
  Misses           105      105           
  Partials          61       61

Impacted Files	Coverage Δ	Complexity Δ
...rc/main/java/uk/co/jemos/podam/api/PodamUtils.java	86.76% <100%> (ø)	27 <0> (ø)	:arrow_down:

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[daivanov]

Hi,

Thank you for the patch it was merged. With description it would be perfect.

Thanks, Daniil

[maratik123]

Added description