add: workflow for publishing to maven central

Author: devi-krishna-kv

.github/workflows/publish.yml

@@ -35,7 +35,7 @@ jobs:
         uses: olafurpg/setup-gpg@v3
 
       - name: get gpg version
-        uses: echo `gpg --version`
+        run: echo `gpg --version`
 
       - name: Import GPG
         uses: crazy-max/ghaction-import-gpg@v6