Remove http2 from dashboard config

Similar to linuxserver/reverse-proxy-confs#681

Signed-off-by: Sander <[email protected]>

Author: golles

root/dashboard/dashboard.subdomain.conf.sample

@@ -1,4 +1,4 @@
-## Version 2022/06/05
+## Version 2024/07/27
 # make sure that your dns has a cname set for dashboard
 
 server {
@@ -69,8 +69,8 @@ server {
 }
 
 server {
-    listen 443 ssl http2;
-    listen [::]:443 ssl http2;
+    listen 443 ssl;
+    listen [::]:443 ssl;
 
     server_name dashboard.*;