Update app.py

app.py

@@ -5,7 +5,7 @@ import pandas_ta as ta
 import matplotlib.pyplot as plt
 
 # Caching the stock data fetch function to improve performance
-@st.cache(suppress_st_warning=True, allow_output_mutation=True)
+@st.cache_data(suppress_st_warning=True, allow_output_mutation=True)
 def fetch_stock_data(ticker, period, interval):
     """
     Fetches stock data for the given ticker, period, and interval.