renable osf (#4233)

Author: casibbald

.github/workflows/ossf.disabled_yaml renamed to .github/workflows/ossf.yaml

@@ -2,7 +2,7 @@ name: ossf
 on:
   branch_protection_rule:
   push:
-    branches: [ main-disabled ]
+    branches: [ main ]
   schedule:
     # Weekly on Saturdays.
     - cron:  '30 1 * * 6'