!8474 modify scipy version

From: @jinyaohui
Reviewed-by: @kingxian,@zh_qh
Signed-off-by: @kingxian

requirements.txt

@@ -2,7 +2,7 @@ numpy >= 1.17.0, <= 1.17.5
 protobuf >= 3.8.0
 asttokens >= 1.1.13
 pillow >= 6.2.0
-scipy >= 1.3.3
+scipy >= 1.5.3
 easydict >= 1.9
 sympy >= 1.4
 cffi >= 1.13.2

setup.py

@@ -113,7 +113,7 @@ required_package = [
     'protobuf >= 3.8.0',
     'asttokens >= 1.1.13',
     'pillow >= 6.2.0',
-    'scipy == 1.3.3',
+    'scipy == 1.5.3',
     'easydict >= 1.9',
     'sympy >= 1.4',
     'cffi >= 1.13.2',