[AUTO] Add release notes for 2.19.5

[opensearch-ci-bot]

Add release notes for 2.19.5

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.73%. Comparing base (fd041e7) to head (7ba647e).
⚠️ Report is 1 commits behind head on 2.19.

Additional details and impacted files

@@           Coverage Diff           @@
##             2.19     #472   +/-   ##
=======================================
  Coverage   94.73%   94.73%           
=======================================
  Files           5        5           
  Lines         152      152           
  Branches       45       45           
=======================================
  Hits          144      144           
  Misses          8        8           

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