Merge pull request #170 from nginx/dependabot/github_actions/sigstore/cosign-installer-3.9.2

chore(deps): bump sigstore/cosign-installer from 3.8.2 to 3.9.2

Author: dareste

.github/workflows/release-builder.yml

@@ -31,7 +31,7 @@ jobs:
           go-version: '1.24.3'
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@3454372f43399081ed03b604cb2d021dabca52bb # v3.8.2
+        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
         with:
           cosign-release: 'v2.4.0'