fix(workflows): regenerate via devctl to drop Node-20 mindsers action

[weatherhog]

Regenerates the auto-generated GitHub workflow files via devctl v7.40.7 gen workflows -f app.

The repo's self-contained Create Release workflow is replaced with a thin wrapper that invokes the centralized reusable workflow at giantswarm/github-workflows, which no longer uses mindsers/changelog-reader-action (see giantswarm/github-workflows#173).

This unblocks the June 2 2026 Node 20 deprecation deadline:
https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Refs: giantswarm/giantswarm#36091

What changed

 .github/workflows/zz_generated.create_release.yaml | 263 +--------------------
 1 file changed, 9 insertions(+), 254 deletions(-)

Test plan

• Generated YAML parses (python3 yaml.safe_load).
• Next release run on this repo will exercise the centralized workflow path.

🤖 Generated with Claude Code

[weatherhog]

Superseded — main has since been regenerated with current devctl (template c4c2f6f) and now delegates release/gitleaks/scorecard to giantswarm/github-workflows. No mindsers/changelog-reader-action reference remains on the base branch, so this PR is a no-op at best and would revert newer template content at worst. Closing. Refs giantswarm/giantswarm#36091.