GitLab

Only add wrapped archflags if not already present.

meson-python does not like duplicate ARCHFLAGS values, and will error
with output such as:

```
('\x1b[31m',)meson-python: error: Multi-architecture builds are not
supported but $ARCHFLAGS='-arch x86_64 -arch x86_64'
[end of output]
```

https://github.com/nipy/nipy-wheels/actions/runs/6805528295/job/18505232990#step:4:164
at time of writing.

Updated Python versions

Updated actions/checkout to v4

Changed repo_dir variable to be uppercase

Updated Python versions

Ensure wheel is installed before import

Updated Alpine Linux version

Test images exist for arm64v8 Alpine Linux

Added Python 3.12 beta

Updated Python versions

Use $BUILD_PREFIX in build_libjpeg_turbo

Use MACOSX_DEPLOYMENT_TARGET when searching for wheels to fuse

universal2 build improvements

Add one space in macos_arm64_native_build_setup

Upgrade setuptools in lint build

When appending to ARCHFLAGS. Otherwise it's easy to see clang fail because of `-arch arm64-arch arm64`.

Updated the latest PyPy version

Updated copyright year

Updated Alpine Linux version in README

Updated to Python 3.11 in GitHub Actions

Replaced aarch64 with arm64v8 for default alpine DOCKER_TEST_IMAGE