[Snyk] Security upgrade rabbitmq from 3-management to management

[iancooper]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• Docker/RabbitMQ/Dockerfile

We recommend upgrading to rabbitmq:management, as this image has only 10 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Issue	Exploit Maturity
	Improper Input Validation SNYK-UBUNTU2004-PYTHON38-5438704	No Known Exploit
	Improper Input Validation SNYK-UBUNTU2004-PYTHON38-5438704	No Known Exploit
	Improper Input Validation SNYK-UBUNTU2004-PYTHON38-5438704	No Known Exploit
	Improper Input Validation SNYK-UBUNTU2004-PYTHON38-5438704	No Known Exploit
	CVE-2023-26604 SNYK-UBUNTU2004-SYSTEMD-3339226	No Known Exploit

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✅ iancooper
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