Fixes some code which is considered deprecated as of PHP 8.5

[hostep]

PHP 8.5 got released yesterday: https://www.php.net/archive/2025.php#2025-11-20-3, and yes I know, Magento doesn't support it yet, but we can already prepare for the future a bit here.

Running php compatibility checker on the codebase here results in this output:

FILE: vendor/clerk/magento2/Controller/Logger/ClerkLogger.php
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FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 3 LINES
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 370 | WARNING | Function curl_close() is deprecated since PHP 8.5 (PHPCompatibility.FunctionUse.RemovedFunctions.curl_closeDeprecated)
 445 | WARNING | Function curl_close() is deprecated since PHP 8.5 (PHPCompatibility.FunctionUse.RemovedFunctions.curl_closeDeprecated)
 524 | WARNING | Function curl_close() is deprecated since PHP 8.5 (PHPCompatibility.FunctionUse.RemovedFunctions.curl_closeDeprecated)
----------------------------------------------------------------------------------------------------------------------------------------


FILE: vendor/clerk/magento2/Model/Adapter/Product.php
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FOUND 1 ERROR AND 2 WARNINGS AFFECTING 3 LINES
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 720 | WARNING | The integer cast is deprecated since PHP 8.5; Use (int) instead (PHPCompatibility.TypeCasts.RemovedTypeCasts.integerDeprecated)
 771 | WARNING | The integer cast is deprecated since PHP 8.5; Use (int) instead (PHPCompatibility.TypeCasts.RemovedTypeCasts.integerDeprecated)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


FILE: vendor/clerk/magento2/Model/Api.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 183 | WARNING | Function curl_close() is deprecated since PHP 8.5 (PHPCompatibility.FunctionUse.RemovedFunctions.curl_closeDeprecated)
 204 | WARNING | Function curl_close() is deprecated since PHP 8.5 (PHPCompatibility.FunctionUse.RemovedFunctions.curl_closeDeprecated)
----------------------------------------------------------------------------------------------------------------------------------------

See:

• https://www.php.net/manual/en/migration85.deprecated.php#migration85.deprecated.core.non-canonical-cast-names
• https://www.php.net/manual/en/migration85.deprecated.php#migration85.deprecated.curl
• https://www.php.net/manual/en/function.curl-close.php

This PR fixes all these. For the curl_close method, I choose to wrap them in checks to see which PHP version is executed at runtime, according to the docs (see above), this function call only worked on PHP versions lower then 8.0