Update contrib repo approvers list (#2395)

Author: lzchen

README.md

@@ -108,14 +108,20 @@ Approvers ([@open-telemetry/python-approvers](https://github.com/orgs/open-telem
 
 - [Aaron Abbott](https://github.com/aabmass), Google
 - [Jeremy Voss](https://github.com/jeremydvoss), Microsoft
+- [Owais Lone](https://github.com/owais), Splunk
+- [Pablo Collins](https://github.com/pmcollins), Splunk
+- [Riccardo Magliocchetti](https://github.com/xrmx), Elastic
 - [Sanket Mehta](https://github.com/sanketmehta28), Cisco
+- [Srikanth Chekuri](https://github.com/srikanthccv), signoz.io
+- [Tammy Baylis](https://github.com/tammy-baylis-swi), SolarWinds
 
 Emeritus Approvers:
 
+- [Ashutosh Goel](https://github.com/ashu658), Cisco
 - [Héctor Hernández](https://github.com/hectorhdzg), Microsoft
-- [Yusuke Tsutsumi](https://github.com/toumorokoshi), Google
+- [Nikolay Sokolik](https://github.com/oxeye-nikolay), Oxeye
+- [Nikolay Sokolik](https://github.com/nikosokolik), Oxeye
 - [Nathaniel Ruiz Nowell](https://github.com/NathanielRN), AWS
-- [Ashutosh Goel](https://github.com/ashu658), Cisco
 
 *Find more about the approver role in [community repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#approver).*
 
@@ -129,7 +135,7 @@ Emeritus Maintainers:
 
 - [Alex Boten](https://github.com/codeboten), Lightstep
 - [Owais Lone](https://github.com/owais), Splunk
-- [Srikanth Chekuri](https://github.com/srikanthccv), signoz.io
+- [Yusuke Tsutsumi](https://github.com/toumorokoshi), Google
 
 *Find more about the maintainer role in [community repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#maintainer).*