Update publish-ruby.yml

Author: rubenjohn-wallee

.github/workflows/publish-ruby.yml

@@ -4,6 +4,7 @@
 # documentation.
 # This workflow will download a prebuilt Ruby version, install dependencies and run tests with Rake
 # For more information see: https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby
+
 name: Ruby
 
 on:
@@ -17,23 +18,20 @@ permissions:
 
 jobs:
   test:
-    strategy:
-      matrix: 
-        ruby-version: ['head','2.4.1', '2.3.4', '2.2.10']
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Ruby ${{ matrix.ruby-version }}
-      continue-on-error: true
+    - name: Set up Ruby
     # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
     # change this to (see https://github.com/ruby/setup-ruby#versioning):
-      uses: ruby/setup-ruby@v1
+    # uses: ruby/setup-ruby@v1
+      uses: ruby/setup-ruby@2b019609e2b0f1ea1a2bc8ca11cb82ab46ada124
       with:
-        ruby-version: ${{ matrix.ruby-version }}
+        ruby-version: 2.4.1
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests
       run: bundle exec rake
-
+      
     - name: Publish to RubyGems
       run: |
         mkdir -p $HOME/.gem