Add Varun Bansal as maintainer (#15163)

Signed-off-by: Gaurav Bafna <[email protected]>

.github/CODEOWNERS

@@ -11,7 +11,7 @@
 #   3. Use the command palette to run the CODEOWNERS: Show owners of current file command, which will display all code owners for the current file.
 
 # Default ownership for all repo files
-* @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @kotwanikunal @mch2 @msfroh @nknize @owaiskazi19 @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah
+* @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @kotwanikunal @linuxpi @mch2 @msfroh @nknize @owaiskazi19  @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah
 
 /modules/lang-painless/ @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @jed326 @kotwanikunal @mch2 @msfroh @nknize @owaiskazi19 @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah
 /modules/parent-join/ @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @jed326 @kotwanikunal @mch2 @msfroh @nknize @owaiskazi19 @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah

MAINTAINERS.md

@@ -5,7 +5,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 ## Current Maintainers
 
 | Maintainer               | GitHub ID                                               | Affiliation |
-| ------------------------ | ------------------------------------------------------- | ----------- |
+|--------------------------|---------------------------------------------------------|-------------|
 | Anas Alkouz              | [anasalkouz](https://github.com/anasalkouz)             | Amazon      |
 | Andrew Ross              | [andrross](https://github.com/andrross)                 | Amazon      |
 | Andriy Redko             | [reta](https://github.com/reta)                         | Aiven       |
@@ -18,6 +18,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Gaurav Bafna             | [gbbafna](https://github.com/gbbafna)                   | Amazon      |
 | Jay Deng                 | [jed326](https://github.com/jed326)                     | Amazon      |
 | Kunal Kotwani            | [kotwanikunal](https://github.com/kotwanikunal)         | Amazon      |
+| Varun Bansal             | [linuxpi](https://github.com/linuxpi)                   | Amazon      |
 | Marc Handalian           | [mch2](https://github.com/mch2)                         | Amazon      |
 | Michael Froh             | [msfroh](https://github.com/msfroh)                     | Amazon      |
 | Nick Knize               | [nknize](https://github.com/nknize)                     | Amazon      |