Update dependency org.apache.maven.plugins:maven-gpg-plugin to v3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven.plugins:maven-gpg-plugin	1.6 -> 3.0.1

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[codecov-commenter]

Codecov Report

Merging #110 (434255e) into master (64128d7) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #110   +/-   ##
=========================================
  Coverage     57.57%   57.57%           
  Complexity      122      122           
=========================================
  Files            29       29           
  Lines           495      495           
  Branches         30       30           
=========================================
  Hits            285      285           
  Misses          188      188           
  Partials         22       22           

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