Update dependency requests to v2.33.0 [SECURITY]

Author: renovate[bot]

requirements.txt

@@ -2,7 +2,7 @@ Django==3.0.8
 mysqlclient==2.0.1
 python-dotenv==0.14.0
 gunicorn==20.0.4
-requests==2.24.0
+requests==2.33.0
 psycopg2==2.8.5
 jsonschema==3.2.0
 celery==4.4.5