Current master branch does not build with --no-default-features

[jessebraham]

I've updated the workflow in my fork to include this option, failing run can be seen here:
https://github.com/jessebraham/svd2rust/actions/runs/11481198244

Enabling the yaml feature also does not resolve this:
https://github.com/jessebraham/svd2rust/actions/runs/11481238404

[jannic]

This is caused by https://github.com/rust-embedded/svd2rust/pull/856/files introducing a settings.yaml file that is parsed using serde_yaml, which is currently an optional dependency.

The easiest solution would be to make that dependency mandatory. Is there anything wrong with that?

The dependency was made optional in #619. That doesn't look like a strict requirement, more like an optimization.

The alternative would be to disable the yaml config file if the dependency is disabled. But IMHO that would be unnecessarily confusing.

[Emilgardis]

I think it would make sense to make the library work without serde_yaml, there's nothing in the functionality of svd2rust as a library that strictly requires it.