chore(github-actions): update ppat/github-workflows (v5.0.1 -> v6.0.0)

[ppat-self-hosted-renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
ppat/github-workflows	action	major	v5.0.1 → v6.0.0

---

Release Notes

ppat/github-workflows (ppat/github-workflows)

v6.0.0

Compare Source

⚠ BREAKING CHANGES

• reusable-workflows: consumers calling build-docker-image.yaml must rename their source_git_ref: input to git_ref:. Any consumer reading the image_id output must switch to image_tag or digest -- audit found none currently do.

✨ Features

• reusable-workflows: build-docker-image - add GHCR target, rename git_ref, drop image_id output (#​615) (5f537e7)
• shipped-dependencies: update renovatebot/renovate (44.30.4 -> 44.31.0) (#​613) (a67f0d6)

🚀 Enhancements + Bug Fixes

• reusable-workflows: build-docker-image - fix cache plumbing, ref-classification, and validation bugs (#​614) (044afdf)

---

Configuration

📅 Schedule: (in timezone US/Eastern)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate CLI.