chore(.github/workflows): remove vuln-check-non-vulnerable-refs flag

Removed the flag that disabled vulnerability checks for non‑vulnerable refs; allow default security behavior.

.github/workflows/dependency-review.yml

@@ -24,4 +24,3 @@ jobs:
           # Project is GPL-3.0-or-later; flag licenses that would taint it.
           deny-licenses: AGPL-1.0-only, AGPL-1.0-or-later, AGPL-3.0-only, AGPL-3.0-or-later, SSPL-1.0, BUSL-1.1
           comment-summary-in-pr: always
-          vuln-check-non-vulnerable-refs: true