.github/workflows/ci.yml in attr_json-1.3.0 vs .github/workflows/ci.yml in attr_json-1.4.0

@@ -51,9 +51,15 @@
             ruby: 2.7
 
           - gemfile: rails_6_1
             ruby: 2.7
 
+          - gemfile: rails_6_1
+            ruby: 3.0
+
+          - gemfile: rails_7_0
+            ruby: 3.0
+
     name: ${{ matrix.gemfile }}, ruby ${{ matrix.ruby }}
 
     steps:
     - uses: actions/checkout@v2