Conditional filtering in Publish step, instead of separate Tag step

Inspired by https://github.com/actions/migrate/issues/42
and TypeStrong/ts-loader#1018 mentioned there.

.github/workflows/push.yml

@@ -14,11 +14,8 @@ jobs:
       uses: actions/npm@master
       with:
         args: test
-    - name: Tag
-      uses: actions/bin/filter@master
-      with:
-        args: tag
     - name: Publish
+      if: github.event_name == 'release' && github.event.action == 'created'
       uses: actions/npm@master
       env:
         NPM_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}