bump version to 2.3.0-SNAPSHOT

[nobodyiam]

What's the purpose of this PR

bump version to 2.3.0-SNAPSHOT

Follow this checklist to help us incorporate your contribution quickly and easily:

• 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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ee1517b) 49.61% compared to head (788c680) 49.64%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5049      +/-   ##
============================================
+ Coverage     49.61%   49.64%   +0.03%     
+ Complexity     1907     1905       -2     
============================================
  Files           372      372              
  Lines         11559    11559              
  Branches       1127     1127              
============================================
+ Hits           5735     5739       +4     
+ Misses         5481     5479       -2     
+ Partials        343      341       -2     

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