Switch to knotx-gradle-plugins

[tMaxx]

Description

Motivation and Context

Screenshots (if appropriate)

Upgrade notes (if appropriate)

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

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[codecov[bot]]

Codecov Report

Merging #50 into master will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #50   +/-   ##
=========================================
  Coverage     90.55%   90.55%           
  Complexity      116      116           
=========================================
  Files             7        7           
  Lines           434      434           
  Branches          7        7           
=========================================
  Hits            393      393           
  Misses           38       38           
  Partials          3        3

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