Pin elastic/oblt-actions action to 8e520e6

Author: elastic-renovate-prod[bot]

.github/workflows/github-commands-comment.yml

@@ -15,4 +15,4 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-      - uses: elastic/oblt-actions/elastic/github-commands@v1
+      - uses: elastic/oblt-actions/elastic/github-commands@8e520e6084fd20336dba88cd5b386775aa8d3ad3 # v1