Update app.py

changed Serper API key setup

app.py

@@ -16,7 +16,7 @@ from typing import IO
 # --- Constants ---
 DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 GEMINI_API_KEY = os.getenv("Gemini_API_key")
-SERPER_API_KEY = os.getenv("Serper_API_key")
+# SERPER_API_KEY = os.getenv("Serper_API_key")
 
 # --- Basic Agent Definition ---
 # Agent capabilities required: Search the web, listen to audio recordings, watch YouTube videos (process the footage, not the transcript), work with Excel spreadsheets