deps: update sigstore/cosign-installer digest to e9a05e6

Author: renovate[bot]

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

@@ -49,7 +49,7 @@ jobs:
           token: ${{ secrets.pat }}
 
       - name: Setup Cosign
-        uses: sigstore/cosign-installer@d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a
+        uses: sigstore/cosign-installer@e9a05e6d32d7ed22b5656cd874ef31af58d05bfa
 
       - name: Setup Syft
         uses: ckotzbauer/actions-toolkit/setup-syft@0.47.0