fix: drop 3.12 support, add 4.0 support

[shemau]

Description

Remove validation for versions of messages for rabbitmq that are no longer supported by the service and adding support for version 4.0 that is in preview.

Release required?

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• Patch release (x.x.X)
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Release notes content

Remove support for rabbitmq version 3.12, the service has reached end of life.
Add support for rabbitmq version 4.0, the service is available in preview.

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• If relevant, a test for the change is included or updated with this PR.
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[shemau]

/run pipeline

[shemau]

Note: This PR passes as-is, but will break CI pipelines until the common-dev-assets has 3.13 or higher database AND that database has backups to restore from.

The current common-dev-assets is 3.12, the new 3.13 DB does not have backups yet.

This PR can be merged and resolve the CI issues after renovate, or it can be merged after renovate when it can be demonstrated locally that TestRunRestoredDBExample passes.

[shemau]

/run pipeline

[ocofaigh]

Upgrade test will never run in tests/other_test.go so its pointless in adding it. If we have a DA upgrade test, we don't need an example one too. Just make sure there is a standard test for the example (in pr_test.go or other_test.go)

[shemau]

/run pipeline

[terraform-ibm-modules-ops]

🎉 This PR is included in version 1.18.0 🎉

The release is available on:

• GitHub release
• v1.18.0

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