fix(isIBAN): improve IR locale

[ds1371dani]

fix(isIban): remove hard coded zero digit from iran iban

I have replaced the 0 digits in the IR iban pattern because there is no rule for such pattern. the only place i found where IR iban has been discussed is this wikipedia page

the reason for this adjustment is that i need to add Iran iban to fakerjs library which is testing the valid ibans with this library

Checklist

• PR contains only changes related; no stray files, etc.
• README updated (not needed)
• Tests written (not needed)
• References provided in PR (where applicable)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (9113304) to head (c7c26c2).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2634   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          114       114           
  Lines         2566      2566           
  Branches       651       651           
=========================================
  Hits          2566      2566           

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[WikiRik]

Additional sources I could find do indeed not mention a 0 at the start

[WikiRik]

Woops, I was too quick. Could you add additional tests for valid IBANs that do not start with a 0?

[ds1371dani]

of course, i added some initial tests for isIBAN (didn't have any tests before)

[WikiRik]

Please move this to the large validator file, where we already have the other isIBAN tests

[ds1371dani]

oops, so sorry didn't see it

done