RUSTSEC-2024-0014: `generational-arena` is unmaintained

> `generational-arena` is unmaintained | Details | | | ------------------- | ---------------------------------------------- | | Status | unmaintained | | Package | `generational-arena` | | Version | `0.2.9` | | URL | [https://github.com/fitzgen/generational-arena/issues/55](https://github.com/fitzgen/generational-arena/issues/55) | | Date | 2024-02-11 | The `generational-arena` crate's repository has been archived and is no longer maintained. ## Alternatives - [slotmap](https://crates.io/crates/slotmap) See [advisory page](https://rustsec.org/advisories/RUSTSEC-2024-0014.html) for additional details.