.github/workflows/gempush.yml in dry-behaviour-0.11.2 vs .github/workflows/gempush.yml in dry-behaviour-0.12.0

@@ -13,13 +13,13 @@
     name: Build + Publish
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@master
-    - name: Set up Ruby 2.6
-      uses: actions/setup-ruby@v1
+    - name: Set up Ruby 2.3.8
+      uses: ruby/setup-ruby@v1
       with:
-        version: 2.6.x
+        version: 2.3.8
 
     - name: Publish to GPR
       run: |
         mkdir -p $HOME/.gem
         touch $HOME/.gem/credentials