Matplotlib 3.6 compatibility football scatter

[andrewRowlinson]

Matplotlib 3.6 changed the argument transOffset to offset_transform:
matplotlib/matplotlib#21965

With the current code the following error occurs when creating the docs:
TypeError: HandlerFootball.create_collection() got an unexpected keyword argument 'offset_transform'.

This code needs to be changed for compatibility with Matplotlib 3.6:

mplsoccer/mplsoccer/scatterutils.py

Lines 277 to 282 in 99976cb

	return type(orig_handle)([football_hexagon_marker, football_pentagon_marker],
	sizes=sizes,
	offsets=offsets,
	transOffset=transOffset,
	facecolors=[facecolor, edgecolor],
	edgecolors=edgecolor)