fix aws sigv4 signing

[lbenedix]

No description provided.

[gschier]

Thanks for the patch! Just a few comments.

[gschier]

Thanks for this, and apologies for the very long silence. A heads-up on where things landed: the signing fix itself shipped separately via #430 (request bodies are now included in the signature).

What's left here is the profile-based credential loading, which is a good idea, but as written the profileName arg is read as values.profile so it wouldn't take effect, and the @aws-sdk dependency is fairly heavy for the plugin. Closing this PR for now, but the feature is tracked and welcome as a fresh PR against current main if you're still interested.

[gschier]

The profile-credentials feature is now tracked here if you'd like to vote to follow: https://yaak.app/feedback/posts/load-aws-credentials-from-a-profile-in-the-aws-sigv4-auth-plugin-2