Add jrivero to gobernance.md (#537)

Signed-off-by: Jose Luis Rivero <[email protected]>

Author: j-rivero

governance.md

@@ -56,6 +56,7 @@ The Gazebo PMC currently consists of the following individuals:
 | Ian Chen             | [Intrinsic](https://www.intrinsic.ai/)         | [iche033](https://github.com/iche033)           | Member         | PST (UTC-8)/PDT (UTC-7) |
 | Benjamin Perseghetti | [Rudis Labs](https://github.com/rudislabs)     | [bperseghetti](https://github.com/bperseghetti) | Member         | EST (UTC-5)/EDT (UTC-4) |
 | Steve Peters         | [Intrinsic](https://www.intrinsic.ai/)         | [scpeters](https://github.com/scpeters)         | Member         | PST (UTC-8)/PDT (UTC-7) |
+| Jose Luis Rivero     | [Honu Robotics](https://www.honurobotics.com/) | [jrivero](https://github.com/j-rivero)          | Member         | CET (UTC+2)/CET (UTC+1) |
 | Addisu Z. Taddese    | [Intrinsic](https://www.intrinsic.ai/)         | [azeey](https://github.com/azeey)               | Project Leader | CST (UTC-6)/CDT (UTC-5) |
 
 ## Current Gazebo Committers