[damned-lies] Add 2.2.9 as minimal Django version

[Claude Paroz <claudep src gnome org>]

commit 52198a8f73cb907b9b2de2f12842dadcb16a93ed
Author: Claude Paroz <claude 2xlibre net>
Date:   Wed Dec 18 10:43:04 2019 +0100

    Add 2.2.9 as minimal Django version

 damnedlies/settings.py | 2 +-
 requirements.txt       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/damnedlies/settings.py b/damnedlies/settings.py
index d96f0ece..cc10c3bb 100644
--- a/damnedlies/settings.py
+++ b/damnedlies/settings.py
@@ -43,7 +43,7 @@ TIME_ZONE = 'Europe/Zurich'
 
 # Language code for this installation. All choices can be found here:
 # http://www.i18nguy.com/unicode/language-identifiers.html
-LANGUAGE_CODE = 'en-US'
+LANGUAGE_CODE = 'en'
 LANGUAGES = global_settings.LANGUAGES + [
     # Add here languages with translations for D-L but not for Django
     ('fur', gettext_noop('Friulian')),
diff --git a/requirements.txt b/requirements.txt
index 77582708..80bd9c15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-django>=2.2,<3.0
+django>=2.2.9,<3.0
 pillow
 mysqlclient
 social-auth-app-django==3.1.0