Update urllib3 from 1.24.1 to 1.25.3

pyup-bot · pyup-bot · commit 2684a9b02e97 · 2019-05-24T03:14:25.000+01:00
diff --git a/requirements.txt b/requirements.txt
@@ -15,4 +15,4 @@ pytz==2019.1
 requests==2.21.0
 six==1.12.0
 soupsieve==1.9
-urllib3==1.24.1
+urllib3==1.25.3
