New migration created in site-packages

[cccaballero]

I am using this great app and I have found that when I run makemigrations a new migration is created in the site-packages module containing:

# Generated by Django 3.0.6 on 2020-05-17 18:32

from django.db import migrations, models
import django.db.models.deletion


class Migration(migrations.Migration):

    dependencies = [
        ('contenttypes', '0002_remove_content_type_name'),
        ('categories', '0003_auto_20200306_1050'),
    ]

    operations = [
        migrations.AlterField(
            model_name='categoryrelation',
            name='content_type',
            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType', verbose_name='content type'),
        ),
    ]

This, of course, is triggering errors because the file is generated with a different name every time, this file, of course, should not be created dynamically because packages should be immutable.