[FIX] payment: force CardExpiry year to 2 digits

Description of the issue/feature this PR addresses:

In odoo payment the cc_expiry.maxlength is limited to 7 characters

https://github.com/odoo/odoo/blob/75785db4c8d0c0be9fb7b8dfc2cd7b8209181c21/addons/payment_test/views/payment_test_templates.xml#L19 https://github.com/odoo/odoo/blob/75785db4c8d0c0be9fb7b8dfc2cd7b8209181c21/addons/payment_ingenico/views/payment_ingenico_templates.xml#L54

Current behavior before PR:

But your [$.payment.formatExpiry](https://github.com/odoo/odoo/blob/14.0/addons/payment/static/lib/jquery.payment/jquery.payment.js#L629) can return 9 characters
![Screenshot(20)](https://user-images.githubusercontent.com/35231827/157748056-c4fa8e4a-1504-41a9-afbc-99743e5491fe.png)

We can see in when the user use autofill

https://user-images.githubusercontent.com/35231827/157748925-1778e71d-28a6-4ed5-82ac-989d4e503a24.mp4

Desired behavior after PR is merged:

https://user-images.githubusercontent.com/35231827/157748644-fd530ded-a13f-473d-8410-09eca4c8c961.mp4



--
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

closes odoo/odoo#86226

Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>

addons/payment/static/lib/jquery.payment/jquery.payment.js

@@ -637,6 +637,9 @@
     year = parts[3] || '';
     if (year.length > 0) {
       sep = ' / ';
+      // Force year to 2 digits
+      if (year.length === 4 )
+        year = year.substr(-2);
     } else if (sep === ' /') {
       mon = mon.substring(0, 1);
       sep = '';