config: Change email from address

Change email from address from "MPI <info@molgen.mpg.de>" to "Intranet
<intranet-wagtail@molgen.mpg.de>". We already did this on the production
instance Aug 21, 2023, probably because "MPI" is used by spammers and
we've added this as a hold queue spam pattern.

Anyway, bring repository in sync.

config/settings/base.py

@@ -200,7 +200,7 @@
 EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
 
 # https://docs.djangoproject.com/en/dev/ref/settings/#default-from-email
-DEFAULT_FROM_EMAIL = 'MPI <info@molgen.mpg.de>'
+DEFAULT_FROM_EMAIL = 'Intranet <intranet-wagtail@molgen.mpg.de>'
 
 # https://docs.djangoproject.com/en/dev/ref/settings/#server-email
 SERVER_EMAIL = DEFAULT_FROM_EMAIL