Web proxy: Update the Kodi host.

After migrating all Docker Compose services to a managed (not the
default) network, the IP address has changed.

Compose/web-proxy/kodi/conf.d/kodi.shore.co.il.conf

 # vim: ft=nginx
-map $host $kodi { default 172.18.0.1; }
+map $host $kodi { default 172.20.0.1; }
 
 server {
     listen      80;