Refine .dockerignore to exclude test files and update response model type in simulate endpoint to use 'Any' instead of 'any'

main.py

@@ -1480,7 +1480,7 @@ async def health_check():
     """Health check endpoint"""
     return HealthCheckResponse(status="healthy", message="Soil water balance model API is running")
 
-@app.post("/simulate", response_model=Dict[str, any])
+@app.post("/simulate", response_model=Dict[str, Any])
 async def simulate_soil_water_balance(request: SimulationRequest):
     """
     Run soil water balance simulation