update requests package to 2.20.0 due to vulnerability warning

Benny Bauer · Benny Bauer · commit 506cf6afd83a · 2018-10-31T21:58:04.000+02:00
diff --git a/requirements.txt b/requirements.txt
@@ -1 +1 @@
-requests==2.13.0
+requests==2.20.0
