use rio-tiler native function

[vincentsarago]

cogeo-mosaic/cogeo_mosaic/backends/base.py

Lines 181 to 187 in 36030d9

	tasks = create_tasks(_reader, mosaic_assets, threads, lon, lat, **kwargs)
	return [
	{"asset": asset, "values": pt}
	for pt, asset in filter_tasks(
	tasks, allowed_exceptions=(PointOutsideBounds,)
	)
	]

https://github.com/cogeotiff/rio-tiler/blob/master/rio_tiler/tasks.py#L72-L85

breaking change
will return a dict in form of {"{asset}": ["value"], .... } instead of [{"asset": asset, "values": pt}