fix(ci): pin ossf/scorecard-action to v2.4.3 (v2 tag does not exist)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ihor-sokoliuk

.github/workflows/scorecard.yml

@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - uses: ossf/scorecard-action@v2
+      - uses: ossf/scorecard-action@v2.4.3
         with:
           results_file: results.sarif
           results_format: sarif