Update tests/cupy_tests/math_tests/test_sumprod.py
Update tests/cupy_tests/math_tests/test_sumprod.py

Co-authored-by: Gregory R. Lee <a9b405ab80323b0de67dc077f1e0e8d40742e516@gmail.com>
cupy/cupy,cupy/cupy,cupy/cupy,cupy/cupy