[BUGFIX] pre-release workflow: replace deprecated ::set-output

[treee111]

This PR…

• Replaces the deprecated ::set-output workflow command in "Create pre-release with .zip files" with $GITHUB_OUTPUT.

Background

This PR started out as a fix for the workflow not triggering on release/v4.4.0, because the branch filter is release-* and * does not match a /. That was the wrong direction — every previous release branch used a dash (release-v0.9.0, release-v1.1.1, release-v2.0.2, release-v4.0.0, release-v4.1.1), so the branch name was the outlier, not the workflow. The branch has been renamed to release-v4.4.0 and the trigger works again with no workflow change.

What remains is the one problem in that step that has nothing to do with branch naming.

Considerations and implementations

       - name: Set output
         id: vars
-        run: echo ::set-output name=tag::${GITHUB_REF#refs/*/}
+        run: echo "tag=${GITHUB_REF#refs/heads/}" >> "$GITHUB_OUTPUT"

::set-output is deprecated by GitHub in favour of writing to the $GITHUB_OUTPUT file. It still works today but produces a deprecation warning and is slated for removal — at which point ${{ steps.vars.outputs.tag }} would silently become empty and the .zip files would be named wahooMapsCreator-device_themes-.zip.

${GITHUB_REF#refs/heads/} replaces ${GITHUB_REF#refs/*/}. This trigger is a push to a branch, so the prefix is always refs/heads/; being explicit avoids relying on * matching across path separators. For refs/heads/release-v4.4.0 both produce release-v4.4.0, so the resulting file names are unchanged.

The branches: ["release-*"] filter is deliberately left untouched.

Out of scope, but worth a look later

• actions/checkout@v2 in this workflow (and in git-release.yml / git-release-test.yml) runs on a deprecated Node runtime — @v4 would be the current one.
• tests.yml runs on push only for develop, so release branches get pylint only via pull requests.

How to test

1. Push a commit to release-v4.4.0. The workflow runs and the "Set output" step no longer logs a set-output deprecation warning.
2. The produced asset is wahooMapsCreator-device_themes-release-v4.4.0.zip — identical naming to before.

Pull Request Checklist

• Reviewed the Contributing Guidelines
  • Especially the Pull-Requests section
• Commits (and commit-messages) are understandable
• Tested with macOS / Linux
• Tested with Windows

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