Celery Distributed Tracing

[TimPansino]

Overview

• Add distributed tracing to Celery over AMQP headers.
• Add celery[pytest] extra for easy testing of celery on a real worker.
• Update pytest to silence Python 3.12 warnings.

[github-actions[bot]]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	bandit	2		0	5.28s
✅ PYTHON	black	7	0	0	1.59s
✅ PYTHON	flake8	7		0	0.9s
✅ PYTHON	isort	7	0	0	0.22s
✅ PYTHON	pylint	7		0	7.7s

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