doc: add himadriganguly as a triager

I would like to apply for the role of a triager in this project.
My motivation to become a triager is to help manage issues, as well as
learn deeper concepts of Node.js, and eventually become a collaborator!
I hereby declare that I have read and understood the Code of Conduct
and will adhere to that.

PR-URL: #39757
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: himadriganguly

README.md

@@ -613,6 +613,8 @@ maintaining the Node.js project.
 
 * [Ayase-252](https://github.com/Ayase-252) -
 **Qingyu Deng** <i@ayase-lab.com>
+* [himadriganguly](https://github.com/himadriganguly) -
+**Himadri Ganguly** <himadri.tech@gmail.com> (he/him)
 * [marsonya](https://github.com/marsonya) -
 **Akhil Marsonya** <akhil.marsonya27@gmail.com> (he/him)
 * [PoojaDurgad](https://github.com/PoojaDurgad) -