[damned-lies] Deactivate Django 3.0 pending code update

[Claude Paroz <claudep src gnome org>]

commit 91222bddc85154b1841844ab1051ca9b61658801
Author: Claude Paroz <claude 2xlibre net>
Date:   Wed Dec 4 14:27:38 2019 +0100

    Deactivate Django 3.0 pending code update

 requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/requirements.txt b/requirements.txt
index 78d13fbb..77582708 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-django>=2.2
+django>=2.2,<3.0
 pillow
 mysqlclient
 social-auth-app-django==3.1.0