Spdlog version change

[saching13]

Spdlog changed to avoid linking issues when using with ros2

[themarpe]

Additional information about the change - both ROS and depthai depend on spdlib library, but not same version. When depthai gets dynamically linked it brings in "default" (external linkage) symbols, which in turn depends on load order to determine which symbols are finally selected.

The solution is to make the spdlog that depthai uses completely "private" (eg. symbols hidden) as there is no need to expose this for library consumers as it doesn't come up in any public interface. In that case, in runtime of the final program, there are 2 spdlog libraries running, one for ROS and a competely separate one for depthai internally.

This could be done for more dependent libraries, which are private to the depthai, but we've opted for this one only as it currently causes issues

[themarpe]

LGTM after typo fix