Fix dependency conflict by upgrading FastAPI to 0.100.x and cleaning up deprecated code

app/models/doctor_schedule.py

@@ -29,7 +29,4 @@ class DoctorSchedule(Base):
     updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
 
     # Relationships
-    doctor = relationship("Doctor", back_populates="schedules")
-    
-    class Config:
-        orm_mode = True
+    doctor = relationship("Doctor", back_populates="schedules")

requirements.txt

@@ -1,4 +1,4 @@
-fastapi>=0.95.0,<0.96.0
+fastapi>=0.100.0,<0.101.0
 uvicorn>=0.21.1,<0.22.0
 sqlalchemy>=2.0.7,<2.1.0
 pydantic>=2.0.0,<3.0.0