Fix gha-setup stop

It always failed to stop rabbitmq container

Author: Zerpet

.ci/ubuntu/gha-setup.sh

@@ -9,10 +9,12 @@ readonly script_dir
 echo "[INFO] script_dir: '$script_dir'"
 readonly rabbitmq_image=${RABBITMQ_IMAGE:-rabbitmq:4.2-rc-management-alpine}
 
-
 readonly docker_name_prefix='rabbitmq-amqp-go-client'
 readonly docker_network_name="$docker_name_prefix-network"
 
+declare -r rabbitmq_docker_name="$docker_name_prefix-rabbitmq"
+declare -r toxiproxy_docker_name="$docker_name_prefix-toxiproxy"
+
 if [[ ! -v GITHUB_ACTIONS ]]
 then
     GITHUB_ACTIONS='false'
@@ -49,9 +51,6 @@ fi
 
 set -o nounset
 
-declare -r rabbitmq_docker_name="$docker_name_prefix-rabbitmq"
-declare -r toxiproxy_docker_name="$docker_name_prefix-toxiproxy"
-
 function start_toxiproxy
 {
     if [[ $run_toxiproxy == 'true' ]]