Update sigstore/cosign-installer digest to ba7bc0a

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -40,7 +40,7 @@ jobs:
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@e40248c492a99ad409432e2ea978d7a2811f2e1f
+        uses: sigstore/cosign-installer@ba7bc0a3fef59531c69a25acd34668d6d3fe6f22
         with:
           cosign-release: 'v2.2.4'