[renovate] Update rabbitmq Docker tag to v4

This MR contains the following updates:

Package	Type	Update	Change
rabbitmq	service-image	major	3-management -> 4-management

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.gitlab/ci/.test.yml

@@ -16,7 +16,7 @@ integration-test-gosdn:
     services:
       - name: ${CI_DEPENDENCY_PROXY_GROUP_IMAGE_PREFIX}/mongo:7
         alias: mongo
-      - name: ${CI_DEPENDENCY_PROXY_GROUP_IMAGE_PREFIX}/rabbitmq:3-management
+      - name: ${CI_DEPENDENCY_PROXY_GROUP_IMAGE_PREFIX}/rabbitmq:4-management
         alias: rabbitmq
         variables:
           HEALTHCHECK_TCP_PORT: "5672"