ci(gha): Update Mattraks/delete-workflow-runs digest to 86d29a7 (#146)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/delete-workflow-run.yaml

@@ -20,7 +20,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Delete workflow runs
-        uses: Mattraks/delete-workflow-runs@0073229620e676f1b9d933b31b2b53df8b5915ef # v2.1.0
+        uses: Mattraks/delete-workflow-runs@86d29a75093353c4c509a876c176234037c2025b # v2.1.0
         with:
           token: ${{ github.token }}
           repository: ${{ github.repository }}