Add internal endpoint blocking to all Nginx configs

production/nginx/location-testnet-api.conf

@@ -2,6 +2,14 @@
 # mempool #
 ###########
 
+# Block the internal APIs of esplora
+location /testnet/api/internal/ {
+	return 404;
+}
+location /testnet/api/v1/internal/ {
+	return 404;
+}
+
 # websocket has special HTTP headers
 location /testnet/api/v1/ws {
 	rewrite ^/testnet/(.*) /$1 break;