In GNOME 41, the screenshot API was changed in a way that broke compatibility with some screen-sharing applications, including Zoom, on Wayland. This is a known issue and a temporary workaround is to switch to Xorg instead of Wayland.
You can switch to Xorg by going to Settings > Devices > Power and Sleep > Additional power settings > Choose what the power button does and then uncheck “On battery: Sleep”. Then log out and select Xorg session instead of Wayland on the login screen.
Alternatively, you can also use the command
gnome-session-wayland --session=gnome-xorg to start a Xorg session instead of a Wayland session.
This is a temporary workaround and it is likely that a proper solution will be provided in a future update. Also, this workaround could impact performance and battery life.