deps: update sigstore/cosign-installer digest to 19351d0 (#624)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/release-job-image.yml

@@ -49,7 +49,7 @@ jobs:
           token: ${{ secrets.pat }}
 
       - name: Setup Cosign
-        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20
+        uses: sigstore/cosign-installer@19351d009d6b451ccfef9ebbb5e31495dd176d24
 
       - name: Setup Syft
         uses: ckotzbauer/actions-toolkit/setup-syft@0.44.0