Prepare for 1.8.0 release

[KodrAus]

What's Changed

• docs: fix small spelling mistake by @bengsparks in https://github.com/uuid-rs/uuid/pull/737
• serde serialize_with support by @dakaizou in https://github.com/uuid-rs/uuid/pull/735
• Fix up CI builds by @KodrAus in https://github.com/uuid-rs/uuid/pull/744
• Only add wasm-bindgen as a dependency on wasm32-unknown-unknown by @emilk in https://github.com/uuid-rs/uuid/pull/738
• impl AsRef for Uuid by @koshell in https://github.com/uuid-rs/uuid/pull/743
• Add v6 to v8 draft link to README by @KodrAus in https://github.com/uuid-rs/uuid/pull/746
• Add a workflow for running cargo outdated by @KodrAus in https://github.com/uuid-rs/uuid/pull/745

New Contributors

• @bengsparks made their first contribution in https://github.com/uuid-rs/uuid/pull/737
• @dakaizou made their first contribution in https://github.com/uuid-rs/uuid/pull/735
• @emilk made their first contribution in https://github.com/uuid-rs/uuid/pull/738
• @koshell made their first contribution in https://github.com/uuid-rs/uuid/pull/743