fix: issue where could not use FileUrl in a manifest

[antazoey]

What I did

For some reaosn, FileUrl format fails pydantic validation for AnyUrl Simple example:

from pydantic import FileUrl, AnyUrl, BaseModel
from typing import Union

class GenericModel(BaseModel):
    v: AnyUrl  # Failure case 

class FileModel(BaseModel):
    v: FileUrl

class DontCareModel(BaseModel):
    v: Union[AnyUrl, FileUrl]

value = 'file:///foo/bar'
try:
    # This don't work on files for some reason
    GenericModel(v=value)  # Fails
except Exception as err:
    print(err)

model = FileModel(v=value)
assert model.v == value

test_model = DontCareModel(v=value)
assert model.v == value
print("success!")

How I did it

Redefine as AnyUrl = Union[_AnyUrl, FileUrl]

How to verify it

Can now have file URL in manifest. See tests.

Checklist

• [ ] Passes all linting checks (pre-commit and CI jobs)
• [ ] New test cases have been added and are passing
• [ ] Documentation has been updated
• [ ] PR title follows Conventional Commit standard (will be automatically included in the changelog)