closedcaption: Port to combine 4
Worked around https://github.com/Marwes/combine/issues/284 / https://github.com/rust-lang/rust/issues/68666 for now.
Edited by Sebastian Dröge
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Worked around https://github.com/Marwes/combine/issues/284 / https://github.com/rust-lang/rust/issues/68666 for now.