Revert "ci(release): always create tag (#231)"

This reverts commit 765e3a5.

Author: seratch

.github/workflows/release.yml

@@ -53,6 +53,7 @@ jobs:
           NPM_CONFIG_ACCESS: public
 
       - name: Tag release
+        if: steps.changesets.outputs.published == 'true'
         run: |
           version=$(jq -r '.version' packages/agents/package.json)
           tag="v${version}"