testCRM: use valid email address in the test

`sender@customer.com <sender@customer.com>` used in the test is not a
valid email address. We have updated to python3.9.20 which comes with a
fix for CVE-2023-27043 and no longer allow this kind of broken addresses.

Replace the address with a similar valid address,
`"sender@customer.com" <sender@customer.com>`, that was probably the
original intention of this test.

bt5/erp5_crm/TestTemplateItem/portal_components/test.erp5.testCRM.py

@@ -735,7 +735,7 @@ class TestCRMMailIngestion(BaseTestCRM):
       ('me@erp5.org, he@erp5.org', ['person_module/me', 'person_module/he']),
       ('Sender <sender@customer.com>', ['person_module/sender']),
       # title is also an email, it should return the person once, not twice
-      ('sender@customer.com <sender@customer.com>', ['person_module/sender']),
+      ('"sender@customer.com" <sender@customer.com>', ['person_module/sender']),
       # tricks to confuse the e-mail parser:
       # a comma in the name
       ('"Sender," <sender@customer.com>, he@erp5.org', ['person_module/sender',