Update ssl.conf

Enabled TLS version 1.3

Author: HenrikBacher

root/defaults/ssl.conf

@@ -13,7 +13,7 @@ ssl_certificate /config/keys/letsencrypt/fullchain.pem;
 ssl_certificate_key /config/keys/letsencrypt/privkey.pem;
 
 # protocols
-ssl_protocols TLSv1.2;
+ssl_protocols TLSv1.2 TLSv1.3;
 ssl_prefer_server_ciphers on;
 ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';