Only upload Trivy reports to GitHub on master branch to avoid duplicates

Author: TrafeX

.github/workflows/build.yaml

@@ -45,6 +45,7 @@ jobs:
           output: 'trivy-results.sarif'
 
       - name: Upload Trivy scan results to GitHub Security tab
+        if: github.ref == 'refs/heads/master' && github.event_name == 'push'
         uses: github/codeql-action/upload-sarif@v1
         with:
           sarif_file: 'trivy-results.sarif'