[gha] Bump open-edge-platform/orch-ci from 2026.0.13 to 2026.0.15

Bumps [open-edge-platform/orch-ci](https://github.com/open-edge-platform/orch-ci) from 2026.0.13 to 2026.0.15.
- [Commits](open-edge-platform/orch-ci@24a3a49...582cb26)

---
updated-dependencies:
- dependency-name: open-edge-platform/orch-ci
  dependency-version: 2026.0.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/auto-update.yml

@@ -34,6 +34,6 @@ jobs:
           persist-credentials: false
 
       - name: Update pull requests
-        uses: open-edge-platform/orch-ci/.github/actions/pr_updater@24a3a495be45af021486e265cf09a17ac3798405  # 2026.0.13
+        uses: open-edge-platform/orch-ci/.github/actions/pr_updater@582cb262491c89e19904164eb24887b01f6925b2  # 2026.0.15
         with:
           github_token: ${{ secrets.SYS_EMF_GH_TOKEN }}