Bump tornado from 6.5.5 to 6.5.6 #1084

Job	Run time
Windows vanilla cargo (crates.io consumer contract)	2m 38s
python-test (ubuntu-latest, 3.12)	51m 15s
python-test (windows-2022, 3.14)	1h 26m 59s
python-test (ubuntu-latest, 3.10)	49m 28s
python-test (ubuntu-latest, 3.13)	51m 30s
python-test (macOS-latest, 3.10)	47m 26s
python-test (windows-2022, 3.10)	1h 23m 33s
python-test (macOS-latest, 3.14)	51m 29s
python-test (ubuntu-latest, 3.14)	54m 42s
python-test (ubuntu-latest, 3.11)	39m 51s
	8h 38m 51s

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