fix: Use explicit dependencies (#6484)

Author: iamareebjamal

requirements/common.txt

@@ -20,7 +20,6 @@ celery~=4.3
 redis~=3.3
 apscheduler~=3.6.1
 pillow~=6.1.0
-amqp~=2.5
 gunicorn~=19.9
 boto~=2.49
 geoip2~=2.9.0
@@ -62,3 +61,4 @@ paypalrestsdk~=1.13
 eventlet~=0.25
 pyyaml~=5.1
 sendgrid~=6.0
+marshmallow~=2.15.2