Updated kotlin-maven-plugin-tools to 0.9.4

[freemanjp]

Keeping up with security fixes.

[codecov]

Codecov Report

Merging #40 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #40   +/-   ##
=========================================
  Coverage     83.18%   83.18%           
  Complexity       82       82           
=========================================
  Files            15       15           
  Lines           452      452           
  Branches         64       64           
=========================================
  Hits            376      376           
  Misses           31       31           
  Partials         45       45

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