Update quart requirement from <0.14 to <0.20

[dependabot]

Updates the requirements on quart to permit the latest version.

Changelog

Sourced from quart's changelog.

0.19.2 2023-10-01

• Bugfix restore the app {after, before}_websocket methods.
• Bugfix correctly set the cli Group in Quart.

0.19.1 2023-09-30

• Bugfix remove QUART_ENV and env usage.

0.19.0 2023-09-30

• Remove Flask-Patch. It has been replaced with the Quart-Flask-Patch extension.
• Remove references to first request, as per Flask.
• Await the background tasks before calling the after serving funcs.
• Don't copy the app context into the background task.
• Allow background tasks a grace period to complete during shutdown.
• Base Quart on Flask, utilising Flask code where possible. This introduces a dependency on Flask.
• Bugfix trailing slash issue in URL concatenation for empty 'path'
• Bugfix Issue #219. Use only CR in SSE documentation.
• Bugfix typing for websocket to accept auth data.
• Bugfix ensure subdomains apply to nested blueprints.
• Bugfix ensure make_response errors if the value is incorrect.
• Bugfix propagated exception handling.
• Bugfix ensure exceptions propagate before logging.
• Bugfix cope with scope extension value being None.
• Bugfix ensure the conditional 304 response is empty.
• Bugfix handle empty path in URL concatenation.
• Bugfix corrected typing hint for abort method at helpers.py.
• Bugfix root_path usage.
• Fix Werkzeug deprecation warnings.
• Add svg's to jinja's autoescaping.
• Improve the WebsocketResponse error, by including the response.
• Add a file mode parameter to the config.from_file method.
• Show the subdomain or host in the routes command output.
• Upgrade to blinker 1.6.
• Require Werkzeug 3.0.0 and Flask 3.0.0.
• Use tomllib rather than toml.

0.18.4 2023-04-09

• Restrict blinker to < 1.6 for 0.18.x versions to ensure it works with Quart's implementation.

0.18.3 2022-10-08

... (truncated)

Commits

• d4fec2a Bump and release 0.19.2
• c6877f6 Correctly set the cli Group in Quart
• dec661c Restore the app {after, before}_websocket methods
• 8fa8ebe Bump and release 0.19.1
• 4b0faa5 Bugfix remove QUART_ENV and env usage
• 655f0d1 Bump and release 0.19.0
• 121c919 Fix the lock workflow
• 89be65f Fix publish workflow
• 4adf5b5 Fix publish workflow
• 5522af5 Add a publish workflow
• Additional commits viewable in compare view

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[dependabot]

Looks like quart is no longer updatable, so this is no longer needed.