Update Andriy Redko (https://github.com/reta) affiliation (#1460) (#1461)

(cherry picked from commit b23c1bc)

Signed-off-by: Andriy Redko <[email protected]>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: opensearch-trigger-bot[bot]

MAINTAINERS.md

@@ -6,7 +6,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 
 | Maintainer           | GitHub ID                                               | Affiliation    |
 | -------------------- | ------------------------------------------------------- | -------------- |
-| Andriy Redko         | [reta](https://github.com/reta)                         | Aiven          |
+| Andriy Redko         | [reta](https://github.com/reta)                         | Independent    |
 | Bukhtawar Khan       | [Bukhtawar](https://github.com/Bukhtawar)               | Amazon         |
 | Daniel Doubrovkine   | [dblock](https://github.com/dblock)                     | Independent    |
 | Dominik Szczepańczyk | [szczepanczykd](https://github.com/szczepanczykd)       | Exadel         |