Bug 2049317 - Update to use zig 0.16 and maturin 1.14 for packaging additional Python wheels

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No description provided.

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one issue filed as PyO3/maturin#3274

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I have a test run of this on Windows ARM as provided by GitHub actions.
CI code is here: https://github.com/fnordig/test-repo/blob/main/.github/workflows/build-test-deploy.yml#L94-L131
Latest run: https://github.com/fnordig/test-repo/actions/runs/30012410646/job/89223629709

This is currently indeed broken because of the upstream issue I filed, fixed and which got merged:
The definition file exports only the PyInit_glean._uniffi symbol, hiding all others, most notably UNIFFI_META_NAMESPACE_GLEAN which uniffi-bindgen uses to generate the bindings. We'll have to wait for a release.

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I now have a test run using upstream maturin (from git), with my patch: https://github.com/fnordig/test-repo/actions/runs/30039673820

This now looks good.

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Turns out that whole __chkstk thing isn't needed. The issue was that maturin was hiding all those symbols. With the upstream fix all symbols are visible again and thus linking works.

Note: still requires a new maturin release first.