Change SBOM scan schedule timing

Updated the schedule for SBOM scan to run hourly at 28 minutes past the hour.

Author: fabricebrito

.github/workflows/scan.yaml

@@ -1,13 +1,13 @@
 name: SBOM Scan
 
 on:
-  # schedule:
-  #   # run hourly at 58 past the hour
-  #   - cron: "58 * * * *"
-  push:
-    branches:
-      - develop
-      - main
+  schedule:
+    # run hourly at 28 past the hour
+    - cron: "28 * * * *"
+  # push:
+  #   branches:
+  #     - develop
+  #     - main
 
 jobs:
   scan:
@@ -115,4 +115,4 @@ jobs:
           name: trivy-sbom-reports-${{ github.run_id }}
           path: trivy-reports/*.json
           retention-days: 7 
-          if-no-files-found: ignore    
+          if-no-files-found: ignore