[Merged by Bors] - Bump clap to 4.0

[sbernauer]

Description

Normal functionality as well as auto-completion tested successfully.

Review Checklist

• Code contains useful comments
• (Integration-)Test cases added (or not applicable)
• Documentation added (or not applicable)
• Changelog updated (or not applicable)
• Cargo.toml only contains references to git tags (not specific commits or branches)

Once the review is done, comment bors r+ (or bors merge) to merge. Further information

[fhennig]

The changes that have been made look good so far. There are a lot of deprecation warnings though that I think would be good to fix already. Run

cargo check --features clap/deprecated

To see what needs fixing. Obviously not all of these are necessary to fix now, but I think we can go for the low-haning fruit at least

Also, the changelog suggests to include unit tests using debug_assert:

#[derive(clap::Parser)]
struct Cli {
    ...
}

#[test]
fn verify_cli() {
    use clap::CommandFactory;
    Cli::command().debug_assert()
}

[sbernauer]

many thx, feedback adressed

[fhennig]

LGTM!

[sbernauer]

bors r+

[bors]

Pull request successfully merged into main.

Build succeeded:

• Run Rustfmt