add Path type argument to tuple returned by get_app_template_dirs

[joshuadavidthomas]

I have made things!

This is my first PR to this project, if there's anything else needed from me let me know.

Related issues

• Closes django.template.utils.get_app_template_dirs return tuple missing type argument #2265

[sobolevn]

It looks like it returns str, not Path:

template_dirs = [
        str(Path(app_config.path) / dirname) # ...

[sobolevn]

Ok, 5.0 returns Path: https://github.com/django/django/blob/5.0/django/template/utils.py#L106

Thank you!