Update sigstore/community digest to f6b4e8f

Author: renovate[bot]

.github/workflows/depsreview.yml

@@ -21,4 +21,4 @@ permissions:
 jobs:
   dependency-review:
     name: License and Vulnerability Scan
-    uses: sigstore/community/.github/workflows/reusable-dependency-review.yml@9ce432264c32d8e55d8ee8810cc3317ffd43f3a7
+    uses: sigstore/community/.github/workflows/reusable-dependency-review.yml@f6b4e8fdb4c760d52e29ec1ce06990de15615ca7