bump version to 2.2.0

[nobodyiam]

What's the purpose of this PR

Updated version to 2.2.0 in preparation for the upcoming release.

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• Read the Contributing Guide before making this pull request.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit tests to verify the code.
• Run mvn clean test to make sure this pull request doesn't break anything.
• Update the CHANGES log.

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (21259e5) 68.59% compared to head (bef3c13) 68.59%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #46   +/-   ##
=========================================
  Coverage     68.59%   68.59%           
  Complexity     1206     1206           
=========================================
  Files           171      171           
  Lines          5196     5196           
  Branches        561      561           
=========================================
  Hits           3564     3564           
  Misses         1371     1371           
  Partials        261      261           

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