ruby.yml in grape-pagy-0.4.0

- old
+ new

@@ -9,10 +9,10 @@
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ["2.6", "2.7"]
+        ruby-version: ["3.0"]
     steps:
       - uses: actions/checkout@v2
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}