Update SearXNG configuration in Caddyfile

- Implemented IP-based access control for basic authentication in the SearXNG section.
- Enhanced security by restricting access to specific IP ranges while maintaining authentication for other users.

Caddyfile

@@ -77,7 +77,9 @@ import /etc/caddy/addons/*.conf
 
 # # SearXNG
 {$SEARXNG_HOSTNAME} {
-    basic_auth { 
+    @protected not remote_ip 127.0.0.0/8 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 100.64.0.0/10
+
+    basic_auth @protected {
         {$SEARXNG_USERNAME} {$SEARXNG_PASSWORD_HASH}
     }