error: no bin target named `pgrx_embed_pg_sqids`.

Hi! I'm trying to install this by following https://github.com/sqids/sqids-postgresql?tab=readme-ov-file#development

```
cargo install --locked cargo-pgrx@0.13.1  # pin needed for init
cargo pgrx init  # missing from docs, but necessary?
cargo build
```

Build fails with
```
error: no bin target named `pgrx_embed_pg_sqids`.
```

What am I doing wrong?