GHSA-WQXC-QRQ4-W5V4 Update unsound DrainFilter and RString::retain

An issue was discovered in the abistable crate before 0.9.1 for Rust. A retain call can create an invalid UTF-8 string, violating soundness...

Spoofing

An issue was discovered in the abistable crate before 0.9.1 for Rust. A retain call can create an invalid UTF-8 string, violating soundness...