change the line related to md5 and see if error related to python3.8 can be resolved

Author: linglp

synapseclient/client.py

@@ -2585,7 +2585,7 @@ def _download_from_URL(
                     else:
                         mode = "wb"
                         previouslyTransferred = 0
-                        sig = hashlib.md5(usedforsecurity=False)
+                        sig = hashlib.new("md5", usedforsecurity=False)
 
                     try:
                         with open(temp_destination, mode) as fd:

synapseclient/core/utils.py

@@ -50,7 +50,7 @@ def md5_for_file(filename, block_size=2 * MB, callback=None):
     :returns: The MD5
     """
 
-    md5 = hashlib.md5(usedforsecurity=False)
+    md5 = hashlib.new("md5", usedforsecurity=False)
     with open(filename, "rb") as f:
         while True:
             if callback: