Add explicit collaborator list into README.md as per GOVERNANCE.md

Signed-off-by: Stewart X Addison <sxa@ibm.com>

Author: sxa

README.md

@@ -297,6 +297,12 @@ for project roles and decision-making, and [CONTRIBUTING.md](CONTRIBUTING.md) fo
 Additional collaborators are managed via the
 [@nodejs/docker team](https://github.com/orgs/nodejs/teams/docker).
 
+- Hugues Malphettes ([hmalphettes](https://github.com/hmalphettes))
+- Tianon Gravi ([tianon](https://github.com/tianon))
+- ttshivers ([ttshivers](https://github.com/ttshivers))
+- [yosifkit](https://github.com/yosifkit)
+- Nick Schooning ([nschonni](https://github.com/nschonni))
+- Stewart X Addison ([sxa](https://github.com/sxa))
 
 ### Emeritus