Update Lib/test/test_http_cookiejar.py

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Author: LamentXU123

Lib/test/test_http_cookiejar.py

@@ -873,6 +873,7 @@ def test_is_ip_like_hostname(self):
         self.assertTrue(is_ip_like_hostname('[2001:db8:85a3::8a2e:370:7334]'))
         self.assertTrue(is_ip_like_hostname('192.168.0.1'))
 
+        self.assertFalse(is_ip_like_hostname('::1'))
         self.assertFalse(is_ip_like_hostname('256.256.256.256'))
         self.assertFalse(is_ip_like_hostname('[::2001:db8:85a3::]'))
         self.assertFalse(is_ip_like_hostname('acme.com'))