Update actions/dependency-review-action digest to a6993e2

Author: renovate[bot]

.github/workflows/dependency-review.yml

@@ -22,4 +22,4 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@5a2ce3f5b92ee19cbb1541a4984c76d921601d7c # v4
+        uses: actions/dependency-review-action@a6993e2c61fd5dc440b409aa1d6904921c5e1894 # v4