GHSA-rjhf-4mh8-9xjq Zerocopy: Some Ref methods are unsound with some type parameters

• crates.io zerocopy: >= 0.2.2, < 0.2.9 → fixed in 0.2.9 • crates.io zerocopy: >= 0.3.0, < 0.3.2 → fixed in 0.3.2 • crates.io zerocopy: >= 0.4.0, < 0.4.1 → fixed in 0.4.1 • crates.io zerocopy: >= 0.5.0, < 0.5.2 → fixed in 0.5.2 • crates.io zerocopy: >= 0.6.0, < 0.6.6 → fixed in 0.6.6 • crates.io zerocopy: >= 0.7.0, < 0.7.31 → fixed in 0.7.31

The `Ref` methods `into_ref`, `into_mut`, `into_slice`, and `into_slice_mut` are unsound and may allow safe code to exhibit undefined behavior when used with `Ref` where `B` is `cell::Ref` or `cell::RefMut`. Note that these methods remain sound when used with `B` types other than `cell::Ref` or `cell::RefMut`. See https://github.com/google/zerocopy/issues/716 for a more in-depth analysis. The current plan is to yank the affected versions soon. See https://github.com/google/zerocopy/issues/679 for more detail.