Fix building python 3.7 wheel by installing newer numpy. (#3927)
Fix building python 3.7 wheel by installing newer numpy. (#3927)


atumanov/ray,robertnishihara/ray,ujvl/ray-ng,pcmoritz/ray-1,stephanie-wang/ray,ujvl/ray-ng,richardliaw/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,robertnishihara/ray,atumanov/ray,atumanov/ray,ray-project/ray,stephanie-wang/ray,pcmoritz/ray-1,pcmoritz/ray-1,robertnishihara/ray,atumanov/ray,stephanie-wang/ray,pcmoritz/ray-1,richardliaw/ray,ray-project/ray,ray-project/ray,richardliaw/ray,stephanie-wang/ray,atumanov/ray,richardliaw/ray,richardliaw/ray,pcmoritz/ray-1,robertnishihara/ray,ray-project/ray,atumanov/ray,ray-project/ray,pcmoritz/ray-1,ujvl/ray-ng,robertnishihara/ray,robertnishihara/ray,atumanov/ray,stephanie-wang/ray,ray-project/ray,pcmoritz/ray-1,robertnishihara/ray,richardliaw/ray,stephanie-wang/ray,atumanov/ray,richardliaw/ray,stephanie-wang/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray,pcmoritz/ray-1,ray-project/ray,ujvl/ray-ng