doc: update nodejs-sec managers

I'll submit a follow on PR to better document security
stewards along with their onboarding. For now just fix
the list so it's not out of date.

Signed-off-by: Michael Dawson <mdawson@devrus.com>

PR-URL: nodejs#41128
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

doc/guides/security-release-process.md

@@ -58,7 +58,8 @@ information described.
   The Node.js project will release new versions of all supported release lines on or shortly after Day of week, Month Day of Month, Year
   For more information see: https://nodejs.org/en/blog/vulnerability/month-year-security-releases/
   ```
-  (Get access from existing manager: Ben Noordhuis, Rod Vagg, Michael Dawson)
+  (Get access from existing manager: Matteo Collina, Rodd Vagg, Michael Dawson,
+  Bryan English, Vladimir de Turckheim)
 
 * [ ] CC `oss-security@lists.openwall.com` on pre-release