CT Duplicati & Jellyfin: Fixes for upgrade to Debian 13

- Duplicati: Fixed curl commands  and  migrated install to deb package
- Jellyfin: Install failed due to 'missing'  libjemalloc,  this  will now be installed earlier in the process

CT-Files/duplicati/Scripts/FirstRun.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+duplicati-server-util --server-datafolder /var/lib/Duplicati change-password
+systemctl stop duplicati
+echo "SETTINGS_ENCRYPTION_KEY=\"$(openssl rand -hex 32)\"" >> /etc/default/duplicati
+systemctl daemon-reload
+systemctl start duplicati