Adjust utils-io test for lifecycle 1.0.3+

[spotrh]

With lifecycle 1.0.3, the behavior of deprecate_warn() changed slightly. Specifically, when details is set, but not via a named vector, it now uses an info bullet by default. See: r-lib/lifecycle@54ef541

This change adjusts the utils-io.md expected strings to reflect the new result (and makes lifecycle >= 1.0.3 a requirement).

(the other way to fix this would be to use set_names() in utils-io.R, but that seemed more intrusive.)

With this change, the tests pass again with lifecycle 1.0.3+.

[jennybc]

Thanks for bringing this up.

I think I will probably used named bullets going forward.
Or I might even be able to remove these deprecate_warn() calls, depending on what type of release I do. I.e. if it's a major release, I can rip out a lot of this backwards compatibility code.

So I'm not merging right away.

[hadley]

Looks like this snapshot got updated in the meantime, so this PR is no longer needed. Even though it didn't get merged we really appreciate you pitching in @spotrh!