Use from_seconds to construct a rclcpp::Duration

[JafarAbdi]

Description of the changes:

Fixes compilation on ROS 2 Humble, the other constructor was deprecated & got removed

Required before submitting a Pull Request:

• [ ] I reviewed CONTRIBUTING.md
• [ ] I built my changes locally
• [ ] I tested my changes with a device
• [ ] I changed both the ROS1 and ROS2 branches

I tested changes on:

• [ ] Windows
• [ ] Linux
• [ ] ROS1
• [x] ROS2