🔒 Fix loose type comparison vulnerability in VinNA validation

[ronanguilloux]

🎯 What: The vulnerability fixed was a loose type comparison (==) in src/IsoCodes/VinNA.php where a check digit (an integer or string 'x') was compared against a character from the input VIN.

⚠️ Risk: The potential impact if left unfixed could involve unexpected type coercions in certain PHP versions or contexts, allowing invalid check digits to bypass validation and potentially exploit the system relying on this logic.

🛡️ Solution: The solution implemented replaces == with === for strict comparison. Since the calculated $check digit can be an integer (e.g., 0-9) and the VIN character $vin[8] is a string character, they are both explicitly cast to (string) before the comparison (string) $check === (string) $vin[8] to ensure strict matching without breaking valid comparisons. The 10 == $check condition was also updated to 10 === $check for consistency.

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PR created automatically by Jules for task 448070248631992280 started by @ronanguilloux

[google-labs-jules]

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