Version request update http->https

Author: Dhiraj240

requirements.txt

@@ -1,7 +1,7 @@
 certifi==2018.8.13
 chardet==3.0.4
 idna==2.7
-requests==2.19.1
+requests>=2.20.0
 six==1.11.0
 slackclient==1.2.1
 urllib3==1.23