Adding members to Security Response Team

Signed-off-by: Varun Lodaya <varunml@amazon.com>

SECURITY.md

@@ -8,22 +8,25 @@ If you discover a potential security issue in this project we ask that you notif
 
 *Giving credit where credit is due, this policy is heavily influenced by the [Xen Project’s security response process](https://xenproject.org/developers/security-policy/), that was put to the test during the [embargo period for XSA-108 back in 2014](https://xenproject.org/2014/10/22/xen-project-security-policy-improvements-get-involved/) and improved its clarity around managing the pre-disclosure list and the deployment of fixes during embargo. We are standing on the shoulders of these battle-tested giants.*
 
-## The Security Team
+## The Security Response Team (SRT)
 
-The OpenSearch Security Team is a subset of the project’s maintainers responsible for looking after the project’s security, including the security issue response process outlined below. Maintainers can be added to the Security Team by submitting a PR updating this document and adding their name to the list below (the process for becoming a maintaner can be found [here](https://github.com/opensearch-project/.github/blob/main/MAINTAINERS.md#becoming-a-maintainer)).
+The OpenSearch Security Response Team (SRT) comprises of a subset of the project’s maintainers responsible for looking after the project’s security, including the security issue response process outlined below. New SRT members can only be nominated by current SRT members.
 
-The OpenSearch Security Team will address reported issues on a best effort basis, prioritizing them based on several factors, including severity.
+SRT will address reported issues on a best effort basis, prioritizing them based on several factors, including severity.
 
 ### Current Members
 
-| Security Team member     | GitHub Alias                                                | Affiliation |
+| Security Response Team   | GitHub Alias                                                | Affiliation |
 | ------------------------ | ----------------------------------------------------------- | ----------- |
 | Kunal Khatua             | [kkhatua](https://github.com/kkhatua)                       | Amazon      |
 | Daniel (dB.) Doubrovkine | [dblock](https://github.com/dblock)                         | Amazon      |
 | Varun Lodaya             | [varun-lodaya](https://github.com/varun-lodaya)             | Amazon      |
 | Prabhat Chathurvedi      | [prabhat-chaturvedi](https://github.com/prabhat-chaturvedi) | Amazon      |
 | Craig Perkins            | [cwperks](https://github.com/cwperks)                       | Amazon      |
-| Eli Fisher               | [elfisher](https://github.com/elfisher)                     | Amazon      |
+| Nils Bandener            | [nibix](https://github.com/nibix)                           | Eliatra     |
+| Andrew Redko             | [reta](https://github.com/reta)                             | Aiven       |
+| Andrey Pleskach          | [willyborankin](https://github.com/willyborankin)           | Aiven       |
+| Ryan Liang               | [RyanL1997](https://github.com/RyanL1997)                   | Amazon      |
 
 ## Process