Update app.py

app.py

@@ -1,8 +1,9 @@
 import subprocess
 
 def install_package():
-    subprocess.run(["pip", "install", "-y", "Greek-voice-clone"], check=True)
-
+    subprocess.run(["pip", "uninstall", "-y", "Greek-voice-clone"], check=True)
+    subprocess.run(["pip", "install", "--upgrade", "git+https://github.com/giorgoskyriacou2009tv/greek-voice-clone", "--no-cache-dir"], check=True)
+    
 # Install the package on startup
 install_package()