action script changes

.github/workflows/npm-publish.yml

@@ -19,10 +19,15 @@ jobs:
           node-version: 12.x
           registry-url: https://npm.pkg.github.com
           scope: '@MaTeMaTuK'
-        env:
-          NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
 
       - name: NPM Publish
-        run: npm publish
+        run: |
+          LATEST=`npm view . version`
+          CURRENT=`cat package.json | jq -r .version`
+          if [ "$LATEST" != "$CURRENT" ]
+          then
+            npm ci
+            npm publish
+          fi
         env:
           NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}