Use TCLTK_* and pkg-config for 3.11+ linking with Homebrew Tcl/Tk; add PYTHON_BUILD_TCLTK_FORMULA envvar

Tcl/Tk 9.0 support was added in 3.13.0b3 and is not official as of 3.14.0;
the build with Homebrew version fails as of this writing

Fixes warnings "configure: WARNING: unrecognized options: --with-tcltk-libs, --with-tcltk-includes"

fix script

Add CPython 3.14.0rc3

Apple CLang excludes it if -isysroot is passed

- pip
- pipX
- pipX.Y
- * -m pip

Co-authored-by: Christian Fredrik Johnsen <christian@johnsen.no>

Bats test suite in docker

use global setup with bats with possibility to add specific test file _setup
use readlink in helper if realpath is not working as expected

fix bats warnings

Make sur that PYENV_TEST_DIR is created if mktemp failed
mock python3 usage by updating create_executable function
fix test by adding the right PATH
update path in plugin test
replace for loop with while read
don't use symlink for stub

Bumps the github-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 4 to 5
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Fix specifying XCode SDK for distutils

* Revert to preferring XCode Zlib

It turns out, everything since 2.7.12 and 3.5.2
can use libs from modern XCode SDK
which is always available unless we're using an alternate compiler

Prefer ZLib from Homebrew/MacPorts if present; Fix using Zlib from Homebrew

Everything since 3.5.2 (see #3301) can use it;
it's now present in all non-EOL MacOS XCode versions

Zlib from XCode is virtually always present now so it only makes sense to use it from elsewhere if it's preferred.
Works around build failure for 2.7 that's incapable of using Zlib from XCode 7+ (see #3301)

miniforge-25.3.0-0 is marked as prerelease, there's no Linux version. Probably recalled.

* use `xcrun` instead of `xcodebuild` which is absent in CLT
* use an alternative way that's compatible with CPython's setup.py since 3.5.2

---------

Co-authored-by: Ivan Pozdeev <vano@mail.mipt.ru>

It turns out, macos-14 has XCode 15 rather than 16 as advertised in Github docs

It breaks the build due to yet unknown structural changes from XCode 15

Explicitly specify how to use the Zsh shell snippet
It turns out to be unclear to some users