chore(deps): update sigstore/cosign-installer action to v3.1.2

Author: renovate[bot]

.github/workflows/on-push.yml

@@ -64,7 +64,7 @@ jobs:
 
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1
+        uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
         with:
           cosign-release: 'v2.1.1'