Merge pull request #366 from fellyph/fixing-playground-pr-button

Add preferred version for WordPress in PR preview action

Author: dkotter

.github/workflows/pr-playground-preview.yml

@@ -83,6 +83,9 @@ jobs:
           }
 
           const blueprint = {
+            preferredVersions: {
+              wp: 'beta',
+            },
             steps: [
               {
                 step: 'installPlugin',