[Snyk] Security upgrade tornado from 6.1 to 6.5.5

[ryanmcmorrowsnyk]

Snyk has created this PR to fix 2 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• requirements.txt

⚠️ Warning

inflect 6.0.5 has requirement pydantic<2,>=1.9.1, but you have pydantic 1.8.2.
graphql-relay 3.1.0 has requirement typing-extensions<4,>=3.7; python_version < "3.8", but you have typing-extensions 4.7.1.
google-api-core 1.34.1 has requirement protobuf!=3.20.0,!=3.20.1,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5,<4.0.0dev,>=3.19.5, but you have protobuf 4.24.4.

Breaking Change Risk

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[ryanmcmorrowsnyk]

This upgrade for Tornado from version 6.1 to 6.5.5 includes several minor version bumps that introduce changes to environment support, stricter request parsing, and new deprecations.

Key Changes:

• Python Version Requirement: The minimum required Python version has been increased. Version 6.2 requires Python 3.7+, version 6.3 requires Python 3.8+, and version 6.5 requires Python 3.9+. [1, 2, 3] Ensure your environment meets the new requirement.
• Stricter Header Parsing: Versions 6.3.3 and 6.4.1 introduced stricter parsing for Content-Length and Transfer-Encoding headers to address security vulnerabilities like request smuggling. [4, 7] This may affect applications behind proxies that send non-compliant headers.
• API Deprecations:
  • RequestHandler.get_secure_cookie and set_secure_cookie have been deprecated in favor of get_signed_cookie and set_signed_cookie. The old names are still available as aliases. [1]
  • RequestHandler.clear_all_cookies is deprecated without a direct replacement. [1]
  • TwitterMixin is deprecated and will be removed in a future version. [5]

Recommendation:
Verify that your Python environment is version 3.9 or newer. It is also recommended to test your application, especially if it operates behind a proxy, to ensure that the stricter header parsing does not cause unexpected behavior. Review code for usage of deprecated methods and plan for future updates.

Source: Tornado Release Notes

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