Update nginx.conf

Updated to include code to prevent remote code execution on certain nginx/php-fpm configurations

contrib/nginx.conf

@@ -30,6 +30,7 @@ server {
 
     location ~ \.php$ {
         fastcgi_split_path_info ^(.+\.php)(/.+)$;
+        try_files $fastcgi_script_name =404;
         fastcgi_pass unix:/run/php-fpm/php-fpm.sock; # make sure this is correct
         fastcgi_index index.php;
         include fastcgi_params;