GHSA-v853-p72q-4cfw: Quart leaks raw request body (incl. plaintext passwords) to stdout via stray debug print in Body.__await__

Quart 0.23.0 contains a stray debug statement (print(data)) inside Body.__await__ in quart/wrappers/request.py. Any request whose body is awaited — await request.form, await request.get_data(), WTForms validate_on_submit(), etc. — has its raw, unparsed body printed to stdout, including plaintext form fields such as passwords and CSRF tokens. Confirmed present in 0.23.0, confirmed absent in 0.22.0.