Release checklist

1. Write release post on website.
2. Update documentation on website (language server, gleam.toml, etc).
3. Update the version in each Cargo.toml.
4. Run make test build.
5. Git commit, tag, push, push tags.
6. Wait for CI release build to finish.
7. Publish release on GitHub from draft made by CI.
8. Share website release post.