fix: disable ipv6 for nginx cache

Signed-off-by: Paul Spooren <mail@aparcar.org>

Author: aparcar

misc/nginx-cache.conf

@@ -26,7 +26,7 @@ server {
     server_name _;
     access_log /dev/stdout cache if=$log_nocache;
 
-    resolver 1.1.1.1 8.8.8.8 valid=300s;
+    resolver 1.1.1.1 8.8.8.8 valid=300s ipv6=off;
     resolver_timeout 5s;
 
     location / {