update go install

Author: cpanato

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
           go-version: 1.17.x
 
       - name: install head cosign
-        run: go install github.com/sigstore/cosign@main
+        run: go install github.com/sigstore/cosign/cmd/cosign@main
 
       - name: check cosign
         run: cosign version