[gha] Bump open-edge-platform/orch-ci/.github/workflows/post-merge.yml from 2026.0.13 to 2026.0.15 (#133)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/post-merge.yml

@@ -20,7 +20,7 @@ jobs:
       security-events: write
       id-token: write
       actions: read
-    uses: open-edge-platform/orch-ci/.github/workflows/post-merge.yml@24a3a495be45af021486e265cf09a17ac3798405  # 2026.0.13
+    uses: open-edge-platform/orch-ci/.github/workflows/post-merge.yml@582cb262491c89e19904164eb24887b01f6925b2  # 2026.0.15
     with:
       bootstrap_tools: "go,gotools,golang-lint,helm,yq,buf,opa"
       run_version_check: true