Support MACOSX_SDK_VERSION 13.3

[bollwyvl]

Comment:

When XCode 15.0 final drops, it should be possible to support MACOSX_SDK_VERSION: "13.3".

References:

• https://github.com/conda-forge/spidermonkey-feedstock/pull/11#issuecomment-1692277042

[h-vetinari]

It's possible that spidermonkey has this check built-in for requiring certain C++ features from newer SDKs, which we however could provide through libcxx and _LIBCPP_DISABLE_AVAILABILITY. If so, it'd just be a matter of patching out the check.

Generally, the SDK would be needed for three reasons:

• compilers
• C++ stdlib
• C stdlib

The first we always provide ourselves, the second we can through the above, and only the third is basically impossible to change (but will be possible to specify at least using a mechanism like https://github.com/conda-forge/staged-recipes/pull/23777)

[bollwyvl]

I was going off 1) that failure and 2) the official guidance... doesn't really matter to me either way, and I'm not in a particular hurry.

[bollwyvl]

Looks like today (or a few days ago) is that day: #281

[bollwyvl]

I didn't bump the build/version, so looks like this didn't deploy yet...

[jakirkham]

Could bump the version (if that hasn't already happened in a subsequent PR)