fix publish script (#358)

* fix publish script

* Change node version from CI to v2

Author: bidoubiwa

.github/workflows/publish.yml

@@ -1,7 +1,8 @@
 name: publish to npm
 on:
-  release:
-    types: [published]
+  push:
+    tags:
+      - v*
 
 jobs:
   publish-npm:
@@ -14,13 +15,7 @@ jobs:
           registry-url: https://registry.npmjs.org/
       - name: Check release validity
         run: sh .github/scripts/check-release.sh
-      - name: Publish with latest tag
-        if: "!github.event.release.prerelease"
+      - name: Publish
         run: npm publish .
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
-      - name: Publish with strapi_v3 tag
-        if: "github.event.release.prerelease"
-        run: npm publish . --tag strapi_v3
-        env:
-          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}