ci: prevent repo checkout by govulncheck

Author: pilinux

.github/workflows/go.yml

@@ -56,6 +56,7 @@ jobs:
       - name: Run govulncheck
         uses: golang/govulncheck-action@v1
         with:
+          repo-checkout: false
           go-version-input: 1.24.x
           go-package: ./...