Environment variables not expanded in `update-information`

[electricbrass]

According to the docs, environment variables can be used anywhere in the recipe.
https://appimage-builder.readthedocs.io/en/latest/reference/recipe.html#environment-variables

But, with the recipe linked below, {{ARCHITECTURE_FILE_NAME}} gets expanded in file_name, but not in update-information.

https://github.com/WerWolv/ImHex/blob/bd93d7ababa1b36c1437310c51a11ebaece1d971/dist/AppImage/AppImageBuilder.yml#L144-L148

This results in the update info being gh-releases-zsync|WerWolv|ImHex|latest|imhex-*-{{ARCHITECTURE_FILE_NAME}}.AppImage.zsync