Update dependency gunicorn to v20.1.0 - abandoned

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gunicorn (source)	==20.0.4 -> ==20.1.0

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Release Notes

benoitc/gunicorn

v20.1.0

Compare Source

• 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 configg 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

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⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
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The artifact failure details are included below:

File name: Pipfile.lock

Command failed: docker run --rm --name=renovate_sidecar --label=renovate_child -v "/mnt/renovate/gh/lpuv/poll":"/mnt/renovate/gh/lpuv/poll" -v "/tmp/renovate-cache":"/tmp/renovate-cache" -v "/tmp/containerbase":"/tmp/containerbase" -e PIPENV_CACHE_DIR -e PIP_CACHE_DIR -e BUILDPACK_CACHE_DIR -e CONTAINERBASE_CACHE_DIR -w "/mnt/renovate/gh/lpuv/poll" docker.io/containerbase/sidecar bash -l -c "install-tool python 3.7.16 && pip install --user pipenv && pipenv lock"
Creating a virtualenv for this project...
Pipfile: /mnt/renovate/gh/lpuv/poll/Pipfile
Using /usr/local/bin/python3.7 (3.7.16) to create virtualenv...
created virtual environment CPython3.7.16.final.0-64 in 1027ms
  creator CPython3Posix(dest=/home/ubuntu/.local/share/virtualenvs/poll-IUHNf5Yh, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/home/ubuntu/.local/share/virtualenv)
    added seed packages: pip==23.0.1, setuptools==67.4.0, wheel==0.38.4
  activators BashActivator,CShellActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator

✔ Successfully created virtual environment!
Virtualenv location: /home/ubuntu/.local/share/virtualenvs/poll-IUHNf5Yh
Locking [packages] dependencies...

ERROR:pip.subprocessor:[present-rich] python setup.py egg_info exited with 1
[ResolutionFailure]:   File "/home/ubuntu/.local/lib/python3.7/site-packages/pipenv/resolver.py", line 812, in _main
[ResolutionFailure]:       pre, clear, verbose, system, write, requirements_dir, packages, category
[ResolutionFailure]:   File "/home/ubuntu/.local/lib/python3.7/site-packages/pipenv/resolver.py", line 767, in resolve_packages
[ResolutionFailure]:       requirements_dir=requirements_dir,
[ResolutionFailure]:   File "/home/ubuntu/.local/lib/python3.7/site-packages/pipenv/resolver.py", line 747, in resolve
[ResolutionFailure]:       req_dir=requirements_dir,
[ResolutionFailure]:   File "/home/ubuntu/.local/lib/python3.7/site-packages/pipenv/utils/resolver.py", line 1109, in resolve_deps
[ResolutionFailure]:       req_dir=req_dir,
[ResolutionFailure]:   File "/home/ubuntu/.local/lib/python3.7/site-packages/pipenv/utils/resolver.py", line 899, in actually_resolve_deps
[ResolutionFailure]:       resolver.resolve()
[ResolutionFailure]:   File "/home/ubuntu/.local/lib/python3.7/site-packages/pipenv/utils/resolver.py", line 687, in resolve
[ResolutionFailure]:       raise ResolutionFailure(message=str(e))
[pipenv.exceptions.ResolutionFailure]: Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  You can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
ERROR: metadata generation failed

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