Allow configuring different images for Postgres and RabbitMQ in testing

[xstefank]

We have an issue where on the test RHEL 9.2 machine, rabbitmq:3.7.25-management-alpine won't run. It doesn't print anything. However, rabbitmq:3.8.4-management-alpine works. But there is no way how to configure the image for testcontainers integration in the https://github.com/quarkiverse/quarkus-vault/blob/main/test-framework/src/main/java/io/quarkus/vault/test/VaultTestExtension.java.

I would like to implement optional override of the default images for testing.

Would you also be able to release 3.5.x release with this (I will also provide a PR if there is a branch) for us?