🔧 bundler default for ruby v2.2

Author: pboling

.github/workflows/hoary.yml

@@ -37,7 +37,7 @@ jobs:
             gemfile: "Appraisal.hoary"
             # rubygems: "2.4.5.5"
             rubygems: default
-            bundler: "1.17.3"
+            bundler: default
 
     steps:
       - name: Checkout