ci: fix pipeline

[Xenira]

Fixed ci as discussed in #315

Also had to fix clippy rules that changed and made master fail.

[ptondereau]

LGTM for me maybe an extra eye from @danog ?

[danog]

Not a super fan of removing platform tests tbh, I see that no one has contributed a mac build for clang 18 to the official llvm repo, but maybe there's some other source that could be used for the binaries? Don't have a Mac, but it seems brew offers a clang 18 build...

[Xenira]

Just added a clang --version to this and it seems to build with Apple clang version 15.0.0 (clang-1500.3.9.4) (https://github.com/Xenira/ext-php-rs-pipeline-debug/actions/runs/10329884456/job/28598214318#step:10:15).

Adding clang 18 is something I would do in #318.

Apple builds itself are not skipped, They just use the builtin clang (same as Windows), which is the better test imo as that better replicates a user trying to build on their system.

[Xenira]

Hey, would like to get this moving again. Imo we should get the ci working again with as few changes as possible and then focus on getting clang 18 support.
@danog

[davidcole1340]

LGTM, thank you!