build(deps): bump amqp from 2.3.2 to 2.4.1 in /backend
build(deps): bump amqp from 2.3.2 to 2.4.1 in /backend

Bumps [amqp](https://github.com/celery/py-amqp) from 2.3.2 to 2.4.1.
- [Release notes](https://github.com/celery/py-amqp/releases)
- [Changelog](https://github.com/celery/py-amqp/blob/master/Changelog)
- [Commits](https://github.com/celery/py-amqp/compare/v2.3.2...v2.4.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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