♻️ Update conftest with new DB Session

src/backend/app/app/tests/conftest.py

@@ -5,15 +5,16 @@
 from sqlalchemy.orm import Session
 
 from app.core.config import settings
-from app.db.session import SessionLocal
+from app.db.engine import engine
 from app.main import app
 from app.tests.utils.user import authentication_token_from_email
 from app.tests.utils.utils import get_superuser_token_headers
 
 
 @pytest.fixture(scope="session")
 def db() -> Generator:
-    yield SessionLocal()
+    with Session(engine) as session:
+        yield session
 
 
 @pytest.fixture(scope="module")