chore: use DeepSource for linting (#40)

* style: format code with black and isort

Format code with black and isort

This commit fixes the style issues introduced in 9560017 according to the output
from black and isort.

Details: https://app.deepsource.com/gh/eshaan7/django-rest-durin/transform/100ee847-53f8-458c-a426-ba32adee2cca/

* remove lints from test.yml

* Update test.yml

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Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>
Co-authored-by: Eshaan Bansal <eshaan7bansal@gmail.com>