Adding @reta to OpenSearch maintainers. (#2905)

* Adding @reta to OpenSearch maintainers.

Signed-off-by: dblock <dblock@amazon.com>

* Update Andrew Ross github id

Signed-off-by: Nicholas Walter Knize <nknize@apache.org>

Co-authored-by: Nick Knize <nknize@apache.org>

Author: dblock

MAINTAINERS.md

@@ -3,27 +3,27 @@
 | Maintainer | GitHub ID | Affiliation |
 | --------------- | --------- | ----------- |
 | Abbas Hussain | [abbashus](https://github.com/abbashus) | Amazon |
+| Anas Alkouz | [anasalkouz](https://github.com/anasalkouz) | Amazon |
+| Andrew Ross   | [andrross](https://github.com/andrross)| Amazon |
+| Andriy Redko | [reta](https://github.com/reta) | Aiven |
 | Charlotte Henkle | [CEHENKLE](https://github.com/CEHENKLE) | Amazon |
+| Daniel "dB." Doubrovkine | [dblock](https://github.com/dblock) | Amazon |
+| Gopala Krishna Ambareesh | [krishna-ggk](https://github.com/krishna-ggk) |Amazon |
 | Himanshu Setia | [setiah](https://github.com/setiah) | Amazon |
+| Itiyama Sadana | [itiyamas](https://github.com/itiyamas) | Amazon |
+| Kartik Ganesh | [kartg](https://github.com/kartg) | Amazon |
+| Marc Handalian | [mch2](https://github.com/mch2) | Amazon |
+| Megha Sai Kavikondala | [meghasaik](https://github.com/meghasaik) | Amazon |
 | Nick Knize | [nknize](https://github.com/nknize) | Amazon |
+| Owais Kazi | [owaiskazi19](https://github.com/owaiskazi19) | Amazon |
 | Rabi Panda | [adnapibar](https://github.com/adnapibar) | Amazon |
+| Rishikesh Pasham | [Rishikesh1159](https://github.com/Rishikesh1159) | Amazon|
+| Ryan Bogan | [ryanbogan](https://github.com/ryanbogan) | Amazon |
 | Sarat Vemulapalli | [saratvemulapalli](https://github.com/saratvemulapalli) | Amazon |
-| Tianli Feng | [tlfeng](https://github.com/tlfeng) | Amazon |
-| Gopala Krishna Ambareesh | [krishna-ggk](https://github.com/krishna-ggk) |Amazon |
-| Vengadanathan Srinivasan | [vengadanathan-s](https://github.com/vengadanathan-s) | Amazon |
 | Shweta Thareja |[shwetathareja](https://github.com/shwetathareja) | Amazon |
-| Itiyama Sadana | [itiyamas](https://github.com/itiyamas) | Amazon |
-| Daniel "dB." Doubrovkine | [dblock](https://github.com/dblock) | Amazon |
-| Andrew Ross   | [andross](https://github.com/andrross)| Amazon |
+| Tianli Feng | [tlfeng](https://github.com/tlfeng) | Amazon |
 | Vacha Shah | [VachaShah](https://github.com/VachaShah) | Amazon |
-| Anas Alkouz | [anasalkouz](https://github.com/anasalkouz) | Amazon |
-| Megha Sai Kavikondala | [meghasaik](https://github.com/meghasaik) | Amazon |
-| Rishikesh Pasham | [Rishikesh1159](https://github.com/Rishikesh1159) | Amazon|
+| Vengadanathan Srinivasan | [vengadanathan-s](https://github.com/vengadanathan-s) | Amazon |
 | Xue Zhou | [xuezhou25](https://github.com/xuezhou25) | Amazon |
-| Kartik Ganesh | [kartg](https://github.com/kartg) | Amazon |
-| Marc Handalian | [mch2](https://github.com/mch2) | Amazon |
-| Ryan Bogan | [ryanbogan](https://github.com/ryanbogan) | Amazon |
-| Owais Kazi | [owaiskazi19](https://github.com/owaiskazi19) | Amazon |
-
 
 [This document](https://github.com/opensearch-project/.github/blob/main/MAINTAINERS.md) explains what maintainers do in this repo, and how they should be doing it. If you're interested in contributing, see [CONTRIBUTING](CONTRIBUTING.md).