Incremented version to 1.2.4.

[dblock]

Coming from opensearch-project/opensearch-build#1417.

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (1.2@19a5c74). Click here to learn what that means.
The diff coverage is n/a.

@@          Coverage Diff           @@
##             1.2      #86   +/-   ##
======================================
  Coverage       ?   82.84%           
  Complexity     ?      549           
======================================
  Files          ?       61           
  Lines          ?     2058           
  Branches       ?      146           
======================================
  Hits           ?     1705           
  Misses         ?      244           
  Partials       ?      109           

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