Fix API docs page not loading

[ObadaS]

@ mention of reviewers

@ihsaan-ullah

A brief description of the purpose of the changes contained in this PR.

This fixes the API docs not loading anymore by adding the swagger_spec_validator package into poetry.

This was the error we get on local instances when trying to open localhost/api/docs

Internal Server Error: /api/docs/
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/asgiref/sync.py", line 489, in thread_handler
    raise exc_info[1]
  File "/usr/local/lib/python3.9/site-packages/django/core/handlers/exception.py", line 38, in inner
    response = await get_response(request)
  File "/usr/local/lib/python3.9/site-packages/django/core/handlers/base.py", line 263, in _get_response_async
    response = await sync_to_async(response.render, thread_sensitive=True)()
  File "/usr/local/lib/python3.9/site-packages/asgiref/sync.py", line 439, in __call__
    ret = await asyncio.shield(exec_coro)
  File "/usr/local/lib/python3.9/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.9/site-packages/asgiref/sync.py", line 493, in thread_handler
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/django/template/response.py", line 105, in render
    self.content = self.rendered_content
  File "/usr/local/lib/python3.9/site-packages/rest_framework/response.py", line 70, in rendered_content
    ret = renderer.render(self.data, accepted_media_type, context)
  File "/usr/local/lib/python3.9/site-packages/drf_yasg2/renderers.py", line 39, in render
    return codec.encode(data)
  File "/usr/local/lib/python3.9/site-packages/drf_yasg2/codecs.py", line 75, in encode
    VALIDATORS[validator](copy.deepcopy(spec))
  File "/usr/local/lib/python3.9/site-packages/drf_yasg2/codecs.py", line 30, in _validate_swagger_spec_validator
    from swagger_spec_validator.common import SwaggerValidationError as SSVErr
ModuleNotFoundError: No module named 'swagger_spec_validator'

I am not sure why it used to work before then suddenly stopped working.

Issues this PR resolves

#1997

To test, simply try to open localhost/api/docs

Checklist

• Code review by me
• Hand tested by me
• I'm proud of my work
• Code review by reviewer
• Hand tested by reviewer
• CircleCi tests are passing
• Ready to merge

[ihsaan-ullah]

@ObadaS we need to document the process of updating packages somewhere. e.g.

Step 1: Make changes in pyproject.toml file
Step 2: Create poetry.lock using the updated toml file using the following commands

# command 1

# command 2

[ihsaan-ullah]

Test

✅ Tested this locally. It works fine