Incremented version to 1.2.3.

[dblock]

Coming from opensearch-project/opensearch-build#1365.

[codecov-commenter]

Codecov Report

Merging #344 (07efe37) into 1.2 (a8edf6c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##                1.2     #344   +/-   ##
=========================================
  Coverage     99.90%   99.90%           
  Complexity     2687     2687           
=========================================
  Files           256      256           
  Lines          6524     6524           
  Branches        420      420           
=========================================
  Hits           6518     6518           
  Misses            5        5           
  Partials          1        1           

Flag	Coverage Δ
sql-engine	99.90% <ø> (ø)

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