Add Andrey Pleskach (Willyborankin) to Maintainers (opensearch-project#2843)

* Add Andrey to Maintainers

Signed-off-by: Stephen Crawford <steecraw@amazon.com>

* Update MAINTAINERS.md

Signed-off-by: Stephen Crawford <65832608+scrawfor99@users.noreply.github.com>

* Update codeowners

Signed-off-by: Stephen Crawford <steecraw@amazon.com>

---------

Signed-off-by: Stephen Crawford <steecraw@amazon.com>
Signed-off-by: Stephen Crawford <65832608+scrawfor99@users.noreply.github.com>

Author: stephen-crawford

.github/CODEOWNERS

@@ -1 +1 @@
-* @cliu123 @cwperks @DarshitChanpura @davidlago @peternied @RyanL1997 @scrawfor99 @reta
+* @cliu123 @cwperks @DarshitChanpura @davidlago @peternied @RyanL1997 @scrawfor99 @reta @willyborankin

MAINTAINERS.md

@@ -22,6 +22,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Ryan Liang       | [RyanL1997](https://github.com/RyanL1997)             | Amazon      |
 | Stephen Crawford | [scrawfor99](https://github.com/scrawfor99)           | Amazon      |
 | Andriy Redko     | [reta](https://github.com/reta)                       | Aiven       |
+| Andrey Pleskach  | [willyborankin](https://github.com/willyborankin)     | Aiven       |
 
 ## Practices