* GIProbe is now VoxelGI
* BakedLightmap is now LightmapGI
As godot adds more ways to provide GI (as an example, SDFGI in 4.0), the different techniques (which have different pros/cons) need to be properly named to avoid confusion.
More saturated icons go better with the new editor theme.
These color changes only apply when using a dark theme.
The editor icon saturation can still be adjusted in the Editor Settings.
Setting the editor icon saturation setting to 0.77 should roughly match
the old icon saturation.
