check-model-parents-and-childs does not consider seeds as parents

[mmartinenvato]

Describe the bug

The check-model-parents-and-childs hook does not consider seeds as parents, so if a model only has a seed as a parent, it throws a failure when configured to have --min-parent-count > 0

To Reproduce
Steps to reproduce the behavior:

1. Add hook to pre-commit config:

  - repo: https://github.com/dbt-checkpoint/dbt-checkpoint
    rev: v1.1.1
    hooks:
      - id: check-model-parents-and-childs
        args: ["--min-parent-cnt", "1", "--"]

2. Create seed under seeds directory

seeds/<schema>/cfg_countries.csv

country_code_iso_alpha2,country_code_iso_alpha3,country_code_iso_numeric,country_name,world_region,continent,currency_code,currency_name
AD,AND,020,"Andorra",Europe,Europe,EUR,Euro
AE,ARE,784,"United Arab Emirates",Asia,Asia,AED,Dirham
...

seeds/_seeds.yml

version: 2

seeds:
  - name: cfg_countries
     schema: <schema>
  ...

3. Create model under models directory which references the seed as a parent

models/<schema>/dim_countries.sql

with
country as (
    select * from {{ ref('cfg_countries') }}
)
select * from country

models/_models.yml

version: 2

models:
  - name: dim_countries

4. Run dbt seed and dbt build so model is in manifest (as required by the hook)

5. run pre-commit and see error:

pre-commit run check-model-parents-and-childs
Check the model has a parents/childs.....................................Failed
- hook id: check-model-parents-and-childs
- exit code: 1

dim_countries: has 0 min, but min 1is/are required.

Expected behavior

The hook recognises a seed as a parent for the purposes of a min-parent-count

Version:
v1.1.1

Additional context
Add any other context about the problem here.

[aungyee]

I have a similar issue with snapshots. check-model-parents-and-childs does not consider snapshots as parents.