chore: fix mypy errors with pydantic

I did add pydantic.mypy plugin but the Settings class was giving an InternalError from the library. I've opened an [issue](python/mypy#18612) and removed the plugin until it worked

Author: dimanu-py

src/social/user/infra/router/signup_user_router.py

@@ -23,7 +23,7 @@ async def signup_user(user_id: str, request: UserSignupRequest) -> JSONResponse:
         username=request.username,
         email=request.email,
     )
-    session_maker = SessionMaker(Settings())
+    session_maker = SessionMaker(Settings())  # type: ignore
     repository = PostgresUserRepository(session_maker=session_maker)
     user_signup = UserSignup(repository)
 

tests/social/user/infra/persistence/test_postgres_user_repository.py

@@ -13,7 +13,7 @@
 class TestPostgresUserRepository:
     @classmethod
     def setup_class(cls) -> None:
-        cls.session_maker = SessionMaker(settings=Settings())
+        cls.session_maker = SessionMaker(settings=Settings())  # type: ignore
         cls.session_maker.create_tables()
 
     @classmethod