Bump to RabbitMQ 4.0 in GHA

Author: acogoluegnes

.github/workflows/test-pr.yml

@@ -1,4 +1,4 @@
-name: Test against RabbitMQ 3.13 stable (PR)
+name: Test against RabbitMQ stable (PR)
 
 on:
   pull_request:

.github/workflows/test-rabbitmq-alphas.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        rabbitmq-image: [ 'pivotalrabbitmq/rabbitmq:v3.13.x', 'pivotalrabbitmq/rabbitmq:v4.0.x' ]
+        rabbitmq-image: [ 'pivotalrabbitmq/rabbitmq:v4.0.x', 'pivotalrabbitmq/rabbitmq:main' ]
     name:  Test against ${{ matrix.rabbitmq-image }}
     steps:
       - uses: actions/checkout@v4

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: Test against RabbitMQ 3.13 stable
+name: Test against RabbitMQ stable
 
 on:
   push:

ci/start-broker.sh

@@ -2,7 +2,7 @@
 
 LOCAL_SCRIPT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
-RABBITMQ_IMAGE=${RABBITMQ_IMAGE:-rabbitmq:3.13}
+RABBITMQ_IMAGE=${RABBITMQ_IMAGE:-rabbitmq:4.0}
 
 wait_for_message() {
   while ! docker logs "$1" | grep -q "$2";