Bump gunicorn from 21.2.0 to 22.0.0

[dependabot]

Bumps gunicorn from 21.2.0 to 22.0.0.

Release notes

Sourced from [gunicorn's releases](https://github.com/benoitc/gunicorn/releases).

Gunicorn 22.0 has been released

Gunicorn 22.0.0 has been released. This version fix the numerous security vulnerabilities. You're invited to upgrade asap your own installation.

Changes:

22.0.0 - 2024-04-17

• use utime to notify workers liveness
• migrate setup to pyproject.toml
• fix numerous security vulnerabilities in HTTP parser (closing some request smuggling vectors)
• parsing additional requests is no longer attempted past unsupported request framing
• on HTTP versions < 1.1 support for chunked transfer is refused (only used in exploits)
• requests conflicting configured or passed SCRIPT_NAME now produce a verbose error
• Trailer fields are no longer inspected for headers indicating secure scheme
• support Python 3.12

** Breaking changes **

• minimum version is Python 3.7
• the limitations on valid characters in the HTTP method have been bounded to Internet Standards
• requests specifying unsupported transfer coding (order) are refused by default (rare)
• HTTP methods are no longer casefolded by default (IANA method registry contains none affected)
• HTTP methods containing the number sign (#) are no longer accepted by default (rare)
• HTTP versions < 1.0 or >= 2.0 are no longer accepted by default (rare, only HTTP/1.1 is supported)
• HTTP versions consisting of multiple digits or containing a prefix/suffix are no longer accepted
• HTTP header field names Gunicorn cannot safely map to variables are silently dropped, as in other software
• HTTP headers with empty field name are refused by default (no legitimate use cases, used in exploits)
• requests with both Transfer-Encoding and Content-Length are refused by default (such a message might indicate an attempt to perform request smuggling)
• empty transfer codings are no longer permitted (reportedly seen with really old & broken proxies)

** SECURITY **

• fix CVE-2024-1135

1. Documentation is available there: [https://docs.gunicorn.org/en/stable/news.html](https://docs.gunicorn.org/en/stable/news.html)
2. Packages: [https://pypi.org/project/gunicorn/](https://pypi.org/project/gunicorn/)

Commits

• f63d59e bump to 22.0
• 4ac81e0 Merge pull request [SEO Improvements to Title & Descriptions #3175](https://redirect.github.com/chore: fix typos benoitc/gunicorn#3175) from e-kwsm/typo
• 401cecf Merge pull request [MozFest: Color palette #3179](https://redirect.github.com/fix(deps): exclude eventlet 0.36.0 to avoid WebSocket bug benoitc/gunicorn#3179) from dhdaines/exclude-eventlet-0360
• 0243ec3 fix(deps): exclude eventlet 0.36.0
• 628a0bc chore: fix typos
• 88fc4a4 Merge pull request [Bump django-cors-headers from 2.5.3 to 3.0.1 #3131](https://redirect.github.com/CI: add CPython 3.12 and PyPy3.10, stop promising untested versions benoitc/gunicorn#3131) from pajod/patch-py12-rebased
• deae2fc CI: back off the agressive timeout
• f470382 docs: promise 3.12 compat
• 5e30bfa add changelog to project.urls (updated for PEP621)
• 481c3f9 remove setup.cfg - overridden by pyproject.toml
• Additional commits viewable in [compare view](https://github.com/benoitc/gunicorn/compare/21.2.0...22.0.0)

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