Type-annotations error caused by `Time` crate

[m1sk9]

related: time-rs/time#681

Nightly fails to compile with Type-annotations error on Time source code.

CI of #161, #162, #163 and #164 are falling because of it. Since babyrite does not use Nightly features, there is no need to compile on Nightly.

[m1sk9]

I thought it was a problem with Nightly, but even Stable fails to compile. It seems that dtolnay fixed the problem with time-rs/time#671, so bumping only time with cargo update seems to fix it.