Investigate immutable releases

[asgrim]

https://github.blog/changelog/2025-08-26-releases-now-support-immutability-in-public-preview/

GH supports "immutable releases" now. There's an issue in that we can't subsequently attach a release artifact to the release (since it is immutable).

It was suggested that "making a draft release > running the release workflow > undraft the release" approach may work.

For PIE it might be as simple as creating the draft manually and then

pie/.github/workflows/release.yml

Lines 36 to 40 in 6769906

	- name: Upload binaries to release
	uses: softprops/action-gh-release@v2
	if: ${{startsWith(github.ref, 'refs/tags/') }}
	with:
	files: pie.phar

might automatically undraft it.
Or perhaps adding draft: false.