chore(deps): bump tornado from 6.3.3 to 6.4.2 in /modules/kernels/python #973

Job	Run time
Build jupyterlab (no kernels)	2m 13s
Build example-bash-minimal kernel	35s
Build example-c-minimal kernel	37s
Build example-dotnet-csharp kernel	44s
Build example-dotnet-fsharp kernel	44s
Build example-elm-minimal kernel	1m 4s
Build example-go-minimal kernel	32s
Build example-haskell-minimal kernel	56m 8s
Build example-javascript-minimal kernel	36s
Build example-julia-minimal kernel	55s
Build example-nix-minimal kernel	40s
Build example-ocaml-minimal kernel	39s
Build example-postgres-minimal kernel	38s
Build example-python-minimal kernel	42s
Build example-python-native kernel	36s
Build example-python-science kernel	40s
Build example-python-stable kernel	52s
Build example-r-minimal kernel	56s
Build example-rust-minimal kernel	57s
Build example-scala-minimal kernel	59s
Build example-typescript-minimal kernel	42s
Build example-zsh-minimal kernel	34s
Build devshell	0s
Build all kernels	0s
Build docs	0s
Test a template	0s
	1h 13m 3s

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