feat(php): Add PHP 8.5 support

[ptondereau]

Description

Fix #591

TODO

• Wait for the official Docker image to release PHP 8.5 images for MUSL CI.
• Test embed codes don't work with 8.5 right now.
• Windows tests are failing because of intsafe import in zend_compatibility, we need to find a way to tell clang to define them somewhere

[coveralls]

Pull Request Test Coverage Report for Build 19771651930

Details

• 1 of 26 (3.85%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.06%) to 35.308%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/types/array/iterators.rs	1	8	12.5%
src/constant.rs	0	18	0.0%

Totals
Change from base Build 19374695739:	-0.06%
Covered Lines:	1603
Relevant Lines:	4540

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💛 - Coveralls

[ptondereau]

@Xenira I think it is good; the challenging one was the embed tests.

[Xenira]

Looks good, thank you. I think there are 2 places where we could use cfg-if.

Not at home atm, so cant do a full review rn.