Update scx data

[Manishearth]

Fixes #6041

Needs unicode-org/icu#3355 and the data from it to land

[Manishearth]

Confirmed that this passes the following test:

#[test]
fn expected_script_thing() {
    use crate::props::Script;
    use crate::script::ScriptWithExtensions;
    let scripts = ScriptWithExtensions::new()
        .get_script_extensions_val('\u{2bc}')
        .iter()
        .collect::<Vec<_>>();
    assert_eq!(
        scripts,
        [
            Script::Bengali,
            Script::Cyrillic,
            Script::Devanagari,
            Script::Latin,
            Script::Thai,
            Script::Lisu,
            Script::Toto
        ]
    );
}

[sffc]

What is the status of this PR?