Merge pull request #96 from gogainda/patch-1

Author: BobbyMcWho

.github/workflows/ruby.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.4', '2.5', '2.6']
+        ruby-version: ['2.4', '2.5', '2.6', 'truffleruby-head']
 
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby ${{ matrix.ruby-version }}
-      uses: actions/setup-ruby@v1
+      uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby-version }}
     - name: Build and test with Rake