♻️ Use new SQLModel session

src/backend/app/app/api/deps.py

@@ -9,19 +9,16 @@
 from app import crud, models, schemas
 from app.core import security
 from app.core.config import settings
-from app.db.session import SessionLocal
+from app.db.engine import engine
 
 reusable_oauth2 = OAuth2PasswordBearer(
     tokenUrl=f"{settings.API_V1_STR}/login/access-token"
 )
 
 
 def get_db() -> Generator:
-    try:
-        db = SessionLocal()
-        yield db
-    finally:
-        db.close()
+    with Session(engine) as session:
+        yield session
 
 
 def get_current_user(