.github/workflows/test.yml in capistrano-asg-rolling-0.1.0 vs .github/workflows/test.yml in capistrano-asg-rolling-0.2.0

@@ -1,14 +1,16 @@
 name: CI
 
-on: [push]
+on:
+  - push
+  - pull_request
 
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.5', '2.6', '2.7', '3.0']
+        ruby-version: ['2.5', '2.6', '2.7', '3.0', '3.1']
 
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1
       with: