[Snyk] Security upgrade tornado from 5.1.1 to 6.5.3

[Poghappy]

Snyk has created this PR to fix 3 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• src/flower/requirements.txt

⚠️ Warning

flower 0.9.2 requires tornado, which is not installed.
celery 5.3.0 requires kombu, which is not installed.

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[Copilot]

Pull request overview

This PR attempts to fix 3 security vulnerabilities by upgrading the tornado dependency from 5.1.1 to 6.5.3. However, the change only updates the requirements.txt file without addressing the hard-coded tornado==4.2.0 version in all Docker build configurations, creating a critical version conflict.

Key Issues:

• Version conflict between requirements.txt (>=6.5.3) and Dockerfiles (==4.2.0)
• Potential incompatibility between flower 0.9.2 (from 2017) and tornado 6.x
• Inconsistent environments between Docker and non-Docker deployments

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