Use default GITHUB_TOKEN for ossf/scorecard-action

Zarf's branch protection was switched to rulesets instead of classic branch protection (temporarily in evaluate mode). A PAT is no longer needed. See:
https://github.com/ossf/scorecard-action#authentication-with-fine-grained-pat-optional

.github/workflows/scorecard.yaml

@@ -31,7 +31,6 @@ jobs:
         with:
           results_file: results.sarif
           results_format: sarif
-          repo_token: ${{ secrets.SCORECARD_READ_TOKEN }}
           publish_results: true
 
       # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF