Release v23.20 to unstable

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>

debian/changelog

@@ -1,3 +1,42 @@
+freedombox (23.20) unstable; urgency=medium
+
+  [ gallegonovato ]
+  * Translated using Weblate (Spanish)
+
+  [ Burak Yavuz ]
+  * Translated using Weblate (Turkish)
+  * Translated using Weblate (Turkish)
+
+  [ Ettore Atalan ]
+  * Translated using Weblate (German)
+
+  [ James Valleroy ]
+  * app: Update diagnose() docstring
+  * diagnostics: Add shortcut to re-run setup for app
+  * locale: Update translation strings
+  * doc: Fetch latest manual
+
+  [ Sunil Mohan Adapa ]
+  * datetime: Fix diagnostic test for checking NTP server sync
+  * apache: tests: Update to use DiagnosticCheck class
+  * backups: Don't leave services stopped if backup fails
+  * operation: Fix issue with re-running setup when it fails first time
+  * coturn: Fix incorrectly passing transport argument to STUN URIs
+  * matrixsynapse: Update old STUN URIs to remove 'transport' parameter
+  * ejabberd: Update old STUN URIs to remove 'transport' parameter
+  * email: Increase the size of the message to 100MiB
+
+  [ Ihor Hordiichuk ]
+  * Translated using Weblate (Ukrainian)
+
+  [ Besnik Bleta ]
+  * Translated using Weblate (Albanian)
+
+  [ Joseph Nuthalapati ]
+  * tests: functional: Run tests on two app servers
+
+ -- James Valleroy <jvalleroy@mailbox.org>  Mon, 06 Nov 2023 21:03:50 -0500
+
 freedombox (23.19) unstable; urgency=medium
 
   [ gallegonovato ]

plinth/__init__.py

@@ -3,4 +3,4 @@
 Package init file.
 """
 
-__version__ = '23.19'
+__version__ = '23.20'