doc: update security release stewards

PR-URL: #48569
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruy Adorno <ruyadorno@google.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>

doc/contributing/security-release-process.md

@@ -29,6 +29,7 @@ The current security stewards are documented in the main Node.js
 | NodeSource   | Juan            | 2022-Nov-04  |
 | RH and IBM   | Michael         | 2023-Feb-16  |
 | NearForm     | Rafael          | 2023-Jun-20  |
+| NearForm     | Rafael          |              |
 | Datadog      | Bryan           |              |
 | IBM          | Joe             |              |
 | Platformatic | Matteo          |              |