change JWT port ot 6080 to not conflict with the playwright tests.

backend/dev_nginx.conf

@@ -62,8 +62,8 @@ server {
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header X-Forwarded-Proto $scheme;
 
-      # JWT Service running at port 8080
-      proxy_pass http://auth-server:8080/;
+      # JWT Service running at port 6080
+      proxy_pass http://auth-server:6080/;
     }
 
     location ^~ /livekit/sfu/ {