Adding Matt as a maintainer (#4469)

* Chore: Add Matt as a maintainer
* Adds changelog

---------

Signed-off-by: Ashwin P Chandran <ashwinpc@amazon.com>

.github/CODEOWNERS

@@ -1 +1 @@
-*   @ananzh @kavilla @seanneumann @AMoo-Miki @ashwin-pc @joshuarrrr @abbyhu2000 @zengyan-amazon @kristenTian @zhongnansu @manasvinibs @ZilongX @Flyingliuhub
+*   @ananzh @kavilla @seanneumann @AMoo-Miki @ashwin-pc @joshuarrrr @abbyhu2000 @zengyan-amazon @kristenTian @zhongnansu @manasvinibs @ZilongX @Flyingliuhub @BSFishy

CHANGELOG.md

@@ -60,6 +60,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Bump `js-yaml` from `3.14.0` to `4.1.0` ([#3770](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3770))
 - Adding @ZilongX and @Flyingliuhub as maintainers. ([#4137](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/4137))
 - Add new MAINTAINERS to CODEOWNERS file. ([#4199](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/4199))
+- Adding @BSFishy as maintainer. ([#4469](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/4469))
 
 ### 🪛 Refactoring
 

MAINTAINERS.md

@@ -19,11 +19,12 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Manasvini B Suryanarayana | [manasvinibs](https://github.com/manasvinibs)       | Amazon      |
 | Tao Liu                   | [Flyingliuhub](https://github.com/Flyingliuhub)     | Amazon      |
 | Zilong Xia                | [ZilongX](https://github.com/ZilongX)               | Amazon      |
+| Matt Provost              | [BSFishy](https://github.com/BSFishy)               | Amazon      |
 
 ## Emeritus
 
-| Maintainer    | GitHub ID                               | Affiliation |
-| ------------- | --------------------------------------- | ----------- |
-| Tommy Markley | [tmarkley](https://github.com/tmarkley) | Amazon      |
+| Maintainer    | GitHub ID                                 | Affiliation |
+| ------------- | ----------------------------------------- | ----------- |
+| Tommy Markley | [tmarkley](https://github.com/tmarkley)   | Amazon      |
 | Mihir Soni    | [mihirsoni](https://github.com/mihirsoni) | Amazon      |
-| Bishoy Boktor | [boktorbb](https://github.com/boktorbb) | Amazon      |
+| Bishoy Boktor | [boktorbb](https://github.com/boktorbb)   | Amazon      |