publish_gem.yml in simplycop-1.12.5

- old
+ new

@@ -10,13 +10,13 @@
   build:
     name: Build and Publish
     runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Ruby 2.6
+      - name: Set up Ruby 3.0
         uses: actions/setup-ruby@v1
         with:
-          version: 2.6.x
+          version: 3.0.x
       - name: Publish to RubyGems
         run: |
           mkdir -p $HOME/.gem
           touch $HOME/.gem/credentials
           chmod 0600 $HOME/.gem/credentials