Migrating to Typst 0.13

[OrangeX4]

typst#1818

When I use octique 0.1.0, I get this error:

`image.decode` is deprecated, directly pass bytes to `image` instead
    ┌─ @preview/octique:0.1.0/impl/octique.typ:335:8
    │
335 │   image.decode(
    │         ^^^^^^

According to Typst blog, we can use image(bytes(..)) replace image.decode(..).

[python33r]

Literally just did a PR for this, before I'd even seen you create this issue!