fix: make --diff work on wasm #318

Job	Run time
Wait for CI Workflow	3s
Cargo publish taplo	13s
get_version	4s
Cargo publish taplo-cli	13s
NPM publish @taplo/cli	24s
Cargo publish lsp-async-stub	13s
NPM publish @taplo/lsp	29s
NPM publish @taplo/lib	25s
Cargo publish taplo-common	12s
Build python wheels (ubuntu, x64)	3m 56s
NPM publish @taplo/core	15s
Build python wheels (ubuntu, x86)	6m 1s
aarch64-apple-darwin	3m 29s
Build python wheels (windows, x86)	5m 56s
aarch64-pc-windows-msvc	5m 21s
Build python wheels (macos, x64)	4m 18s
x86_64-pc-windows-msvc	5m 4s
Build python wheels (ubuntu, aarch64)	3m 51s
Build python wheels (windows, x64)	5m 27s
i686-pc-windows-msvc	5m 41s
Build python wheels (macos, aarch64)	3m 8s
x86_64-apple-darwin	3m 23s
Cargo publish taplo-lsp	10s
Build linux executables	23m 9s
Publish VSCode Extension	58s
Release Taplo CLI binaries	7s
Test python wheels (macos-latest)	15s
Test python wheels (windows-latest)	20s
Test python wheels (ubuntu-latest)	16s
PyPI publish taplo	0s
	1h 23m 21s

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