[FIX] account_edi_proxy_user: update test server url

The proxy test server has been updated, and there is a new url, this
commit updates the default server constant in the code to match the new
url.

closes odoo#87254

X-original-commit: d148522
Signed-off-by: Josse Colpaert <jco@odoo.com>
Signed-off-by: Daniel Kosky (dako) <dako@odoo.com>

Author: dbkosky

addons/account_edi_proxy_client/models/account_edi_proxy_user.py

@@ -19,7 +19,7 @@
 
 
 DEFAULT_SERVER_URL = 'https://l10n-it-edi.api.odoo.com'
-DEFAULT_TEST_SERVER_URL = 'https://iap-services-test-saas12-test-13-test-14-test-15.test.odoo.com'
+DEFAULT_TEST_SERVER_URL = 'https://iap-services-test.odoo.com'
 TIMEOUT = 30