Merge pull request #508 from phasehq/dependabot/pip/backend/gunicorn-23.0.0

chore(deps): bump gunicorn from 22.0.0 to 23.0.0 in /backend

Author: rohan-chaturvedi

backend/requirements.txt

@@ -28,7 +28,7 @@ graphene==3.2.1
 graphene-django==3.0.0
 graphql-core==3.2.3
 graphql-relay==3.2.0
-gunicorn==22.0.0
+gunicorn==23.0.0
 hvac==2.1.0
 hyperlink==21.0.0
 idna==3.4