chore(deps): pin actions/checkout action to eef6144

.github/workflows/keepalive.yml

@@ -10,7 +10,7 @@ jobs:
     name: Keepalive Workflow
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
       - uses: gautamkrishnar/keepalive-workflow@3eb47f21355191080dca0f7662d45c192d2ef64d # v2.0.7
         with:
           workflow_files: "keepalive.yml, add-maintainer-custom-property.yml, add-runtime-custom-property.yml, check-new-repos.yml, copy-repo-secrets-to-org-secrets.yml, dependabot-auto-dismiss.yml, dependabot-nudge.yml, older-than-2y.yml, renovate-sanity-check.yml"