Pin Flask to 3.0.3 due to incompat with Quart 0.19.4
Flask 3.1.0 introduced PROVIDE_AUTOMATIC_OPTIONS which is not set by
Qart 0.19.4: https://github.com/pallets/flask/pull/5496/
That causes local build to fail with a KeyError. Pin Flask for now.
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Flask 3.1.0 introduced PROVIDE_AUTOMATIC_OPTIONS which is not set by
Qart 0.19.4: https://github.com/pallets/flask/pull/5496/
That causes local build to fail with a KeyError. Pin Flask for now.