Hold prosody package so that it doesn't update

src/freedombone-app-xmpp

@@ -1021,6 +1021,7 @@ function install_xmpp {
     if [ -d /etc/letsencrypt ]; then
         usermod -a -G ssl-cert prosody
     fi
+    apt-mark -q hold prosody
     systemctl restart prosody
 
     if [[ $ONION_ONLY != 'no' ]]; then