Update ossf.yaml

Author: Tyler Titsworth

.github/workflows/ossf.yaml

@@ -7,12 +7,13 @@ on:
   # For Branch-Protection check. Only the default branch is supported. See
   # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
   branch_protection_rule:
+  pull_request:
   # To guarantee Maintained check is occasionally updated. See
   # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
   schedule:
     - cron: '29 17 * * 4'
   push:
-    # branches: [ "main" ]
+    branches: [ "main" ]
 
 # Declare default permissions as read only.
 permissions: read-all