.github/workflows/ci.yaml in openapi_parser-1.0.0 vs .github/workflows/ci.yaml in openapi_parser-2.0.0

@@ -3,11 +3,18 @@
 jobs:
   test:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
-        ruby: [2.6, 2.7, '3.0', '3.1']
+        os:
+          - ubuntu-latest
+          - macos-latest
+        ruby:
+          - "2.7"
+          - "3.0"
+          - "3.1"
+          - "3.2"
+          - ruby-head
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1
       with: