Add Andre to maintainers

[sumobrian]

Description

Updating MAINTAINERS.ms

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (eacec89) 73.55% compared to head (0f9076a) 73.55%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #489   +/-   ##
=========================================
  Coverage     73.55%   73.55%           
  Complexity     1182     1182           
=========================================
  Files           124      124           
  Lines          4886     4886           
  Branches        439      439           
=========================================
  Hits           3594     3594           
  Misses          998      998           
  Partials        294      294           

Flag	Coverage Δ
unittests	73.55% <ø> (ø)

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[dblock]

You also need to add him to CODEOWNERS.

https://github.com/opensearch-project/opensearch-migrations: 8
 missing_in_codeowners: ["andrekurait"]