Adjust publish action

Author: Laurynas Butkus

.github/workflows/publish.yml

@@ -11,10 +11,10 @@ jobs:
 
       # setup .gem/credentials
       - run: mkdir -p ~/.gem
-      - run: >-
-          echo -e "---\n:rubygems_api_key: ${RUBYGEMS_API_KEY}" > ~/.gem/credentials
-        env:
+      - env:
           RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}
+        run: >-
+          echo -e "---\n:rubygems_api_key: ${RUBYGEMS_API_KEY}" > ~/.gem/credentials
       - run: chmod 0600 ~/.gem/credentials
 
       - run: gem build convert_api.gemspec --output=release.gem