requirements: Upgrade pika from 0.12.0 to 0.13.0.

The important changes to pika for us are based on this PR of ours:
https://github.com/pika/pika/pull/1129

Fixes #11394.

requirements/common.in

@@ -99,7 +99,7 @@ ndg-httpsclient==0.5.1
 
 # Needed to access rabbitmq
 # See #8466 for why we're not using the latest version.
-pika==0.12.0
+pika==0.13.0
 
 # Needed to access our database
 psycopg2==2.7.7 --no-binary psycopg2

requirements/dev.txt

@@ -109,7 +109,7 @@ pbr==5.1.1                # via mock
 pexpect==4.6.0            # via ipython
 phonenumberslite==8.10.4  # via django-phonenumber-field
 pickleshare==0.7.5        # via ipython
-pika==0.12.0
+pika==0.13.0
 pillow==5.4.1
 pip-tools==2.0.2
 polib==1.1.0

requirements/prod.txt

@@ -79,7 +79,7 @@ pbr==5.1.1                # via mock
 pexpect==4.6.0            # via ipython
 phonenumberslite==8.10.4  # via django-phonenumber-field
 pickleshare==0.7.5        # via ipython
-pika==0.12.0
+pika==0.13.0
 pillow==5.4.1
 polib==1.1.0
 premailer==3.2.0

zerver/lib/queue.py

@@ -8,6 +8,7 @@ from typing import Any, Callable, Dict, List, Mapping, Optional, Set, Union
 
 from django.conf import settings
 import pika
+import pika.adapters.tornado_connection
 from pika.adapters.blocking_connection import BlockingChannel
 from pika.spec import Basic
 from tornado import ioloop
@@ -161,10 +162,10 @@ class SimpleQueueClient:
     def stop_consuming(self) -> None:
         self.channel.stop_consuming()
 
-# Patch pika.adapters.TornadoConnection so that a socket error doesn't
+# Patch pika.adapters.tornado_connection.TornadoConnection so that a socket error doesn't
 # throw an exception and disconnect the tornado process from the rabbitmq
 # queue. Instead, just re-connect as usual
-class ExceptionFreeTornadoConnection(pika.adapters.TornadoConnection):
+class ExceptionFreeTornadoConnection(pika.adapters.tornado_connection.TornadoConnection):
     def _adapter_disconnect(self) -> None:
         try:
             super()._adapter_disconnect()