Pin zachary95/github-actions-debounce action to ab73634 (#2873)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: elastic-renovate-prod[bot]

.github/workflows/npm-publish-unstable.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Debounce 30 minutes
-        uses: zachary95/[email protected]
+        uses: zachary95/github-actions-debounce@ab7363483e2837992b8aa6be891763da00ac14f9 # v0.1.0
         with:
           wait: 1800