Update gunicorn to 23.0.0

[pyup-bot]

This PR updates gunicorn from 20.0.4 to 23.0.0.

Changelog

23.0.0

===================

- minor docs fixes (:pr:`3217`, :pr:`3089`, :pr:`3167`)
- worker_class parameter accepts a class (:pr:`3079`)
- fix deadlock if request terminated during chunked parsing (:pr:`2688`)
- permit receiving Transfer-Encodings: compress, deflate, gzip (:pr:`3261`)
- permit Transfer-Encoding headers specifying multiple encodings. note: no parameters, still (:pr:`3261`)
- sdist generation now explicitly excludes sphinx build folder (:pr:`3257`)
- decode bytes-typed status (as can be passed by gevent) as utf-8 instead of raising `TypeError` (:pr:`2336`)
- raise correct Exception when encounting invalid chunked requests (:pr:`3258`)
- the SCRIPT_NAME and PATH_INFO headers, when received from allowed forwarders, are no longer restricted for containing an underscore (:pr:`3192`)
- include IPv6 loopback address ``[::1]`` in default for :ref:`forwarded-allow-ips` and :ref:`proxy-allow-ips` (:pr:`3192`)

** NOTE **

- The SCRIPT_NAME change mitigates a regression that appeared first in the 22.0.0 release
- Review your :ref:`forwarded-allow-ips` setting if you are still not seeing the SCRIPT_NAME transmitted
- Review your :ref:`forwarder-headers` setting if you are missing headers after upgrading from a version prior to 22.0.0

** Breaking changes **

- refuse requests where the uri field is empty (:pr:`3255`)
- refuse requests with invalid CR/LR/NUL in heade field values (:pr:`3253`)
- remove temporary ``--tolerate-dangerous-framing`` switch from 22.0 (:pr:`3260`)
- If any of the breaking changes affect you, be aware that now refused requests can post a security problem, especially so in setups involving request pipe-lining and/or proxies.

22.0.0

===================

- 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

21.2.0

===================

- fix thread worker: revert change considering connection as idle . 

*** NOTE ***

This is fixing the bad file description error.

21.1.0

===================

- fix thread worker: fix socket removal from the queue

21.0.1

===================

- fix documentation build

21.0.0

===================

- support python 3.11
- fix gevent and eventlet workers
- fix threads support (gththread): improve performance and unblock requests
- SSL: now use SSLContext object
- HTTP parser: miscellaneous fixes
- remove unnecessary setuid calls
- fix testing
- improve logging
- miscellaneous fixes to core engine

*** RELEASE NOTE ***

We made this release major to start our new release cycle. More info will be provided on our discussion forum.


================
Changelog - 2024
================

20.1.0

===================

- document WEB_CONCURRENCY is set by, at least, Heroku
- capture peername from accept: Avoid calls to getpeername by capturing the peer name returned by
accept
- log a warning when a worker was terminated due to a signal
- fix tornado usage with latest versions of Django 
- add support for python -m gunicorn
- fix systemd socket activation example
- allows to set wsgi application in config file using `wsgi_app`
- document `--timeout = 0`
- always close a connection when the number of requests exceeds the max requests
- Disable keepalive during graceful shutdown
- kill tasks in the gthread workers during upgrade
- fix latency in gevent worker when accepting new requests
- fix file watcher: handle errors when new worker reboot and ensure the list of files is kept
- document the default name and path of the configuration file
- document how variable impact configuration
- document the `$PORT` environment variable
- added milliseconds option to request_time in access_log
- added PIP requirements to be used for example
- remove version from the Server header
- fix sendfile: use `socket.sendfile` instead of `os.sendfile`
- reloader: use  absolute path to prevent empty to prevent0 `InotifyError` when a file 
is added to the working directory
- Add --print-config option to print the resolved settings at startup.
- remove the `--log-dict-config` CLI flag because it never had a working format
(the `logconfig_dict` setting in configuration files continues to work)


** Breaking changes **

- minimum version is Python 3.5
- remove version from the Server header 

** Documentation **



** Others **

- miscellaneous changes in the code base to be a better citizen with Python 3
- remove dead code
- fix documentation generation





================
Changelog - 2023
================

Links

• PyPI: https://pypi.org/project/gunicorn
• Changelog: https://data.safetycli.com/changelogs/gunicorn/