upgrade requests, urllib dependencies

Author: Abhijeet Reddy

requirements.txt

@@ -13,9 +13,10 @@ itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1
 pytz==2019.3
-requests==2.22.0
+requests==2.27.1
+selenium==3.141.0
 six==1.14.0
 soupsieve==1.9.5
-urllib3==1.26.5
+urllib3==1.26.9
 Werkzeug==0.16.1
 selenium==3.141.0