[GitHub Request] Add @rishabhmaurya as co-maintainer of the OpenSearch repo

[mch2]

What is the type of request?

Repository Management

Details of the request

I have completed the nomination process and Rishabh as accepted an invitation to become a co-maintainer of the OpenSearch repository.

Additional information to support your request

opensearch-project/OpenSearch#18349

When does this request need to be completed?

asap

Notes

Track the progress of your request here: Engineering Effectiveness Board (view).
Member of @opensearch-project/admin will take a look at the request soon.
Thanks!

[gaiksaya]

Added @rishabhmaurya to core maintainers team. Should have maintainer access now.
Thanks!