Update version download URL

Author: MatteoPologruto

tests/test_update.py

@@ -41,7 +41,7 @@ def on_terminate(proc):
 def test_latest_version(base_url, agent):
     resp = requests.get(f"{base_url}/info")
     assert resp.status_code == 200
-    latest_version = requests.get("https://s3.amazonaws.com/arduino-create-static/agent-metadata/agent-version.json") # get the latest version available
+    latest_version = requests.get("https://downloads.arduino.cc/agent-metadata/agent-version.json") # get the latest version available
 
     version = latest_version.json()
     info = resp.json()