fix: Incorrect nullability in some dependencies

[github-actions]

Note

The pull request "fix: Incorrect nullability in some dependencies" was created by @noahsmartin but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

Some of the nullability annotations were being misused here, in Swift they will have to be correct so I just pulled it out into a separate PR

#skip-changelog

[linear]

COCOA-806