!884 upgrade the version of scipy to 1.5.3

From: @luopengting
Reviewed-by: @ouwenchang,@wenkai_dist
Signed-off-by: @wenkai_dist

requirements.txt

@@ -11,7 +11,7 @@ numpy>=1.17.0
 protobuf>=3.8.0
 psutil>=5.6.1
 pyyaml>=5.3.1
-scipy>=1.3.3
+scipy>=1.5.3
 scikit-learn>=0.21.2
 six>=1.12.0
 Werkzeug>=1.0.0