chore: use port 80 for dummy-tdx

Author: raykyri

tdx-dummy/dummy-tdx-dcap.service

@@ -7,7 +7,7 @@ Wants=network-setup.service
 Type=exec
 User=root
 Group=root
-ExecStart=/usr/bin/dummy-tdx-dcap --listen-addr 0.0.0.0:8080
+ExecStart=/usr/bin/dummy-tdx-dcap --listen-addr 0.0.0.0:80
 Restart=on-failure
 RestartSec=10
 StandardOutput=journal