7z.sfx: update to v26.01

This corresponds to the commit ef8de073 (Merge pull request #30 from
git-for-windows/dependabot/github_actions/actions/upload-artifact-7,
2026-03-03) of
https://github.com/git-for-windows/7-Zip/commits/v26.01-VS2022-sfx
and the artifacts have been copied from the workflow run at
https://github.com/git-for-windows/7-Zip/actions/runs/25169697215.

This closes git-for-windows/git#6221.

Assisted-by: Claude Opus 4.7 (1M context)(Internal only)
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho