Update elastic/oblt-actions digest to f740c3c (#1884)

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

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@1a2fda5a6ac99a553fdcf672cbcf7eef2f7e6ffb # v1
+      - uses: elastic/oblt-actions/elastic/github-commands@f740c3cbf5827083fd638a6b80bcd27d0f903d37 # v1