Answer
Doesnt change
Work Step by Step
İf ladder is in equilibrium, the total vertical and horizontal components of forces acting on ladder as well as torque on ladder is zero. Therefore,
$\sum \overrightarrow {F}_{y}=0\Rightarrow mg-N_{G0}=0\Rightarrow N_{G0}=mg......\left( 1\right) $
As we see from equation $(1)$, $N_{G0}$ doesnt depend on $α$ so even if we move the ladder close to the wall, it will not change.