Update submodule sitl_gazebo to latest Sun May 16 12:39:08 UTC 2021
Update submodule sitl_gazebo to latest Sun May 16 12:39:08 UTC 2021

    - sitl_gazebo in PX4/Firmware (7cb3ed98b61c514d01fc9a68ba87445f8b9aa142): https://github.com/PX4/PX4-SITL_gazebo/commit/2496b85dd22d2f9c1c1281d5ef77dfb86ef604a3
    - sitl_gazebo current upstream: https://github.com/PX4/PX4-SITL_gazebo/commit/402897d22505a13505c19adca23c03a47224175f
    - Changes: https://github.com/PX4/PX4-SITL_gazebo/compare/2496b85dd22d2f9c1c1281d5ef77dfb86ef604a3...402897d22505a13505c19adca23c03a47224175f

    402897d 2021-05-09 Jaeyoung-Lim - Update mavsdk version scripts

acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware