Update ci.yml

Author: kojix2

.github/workflows/ci.yml

@@ -6,9 +6,10 @@ jobs:
     name: ${{ matrix.os }} Ruby ${{ matrix.ruby }}
     runs-on: ${{ matrix.os }}-latest
     strategy:
+      fail-fast: false
       matrix:
         os:   [ 'ubuntu', 'macos', 'windows' ]
-        ruby: [ '2.7', '3.0', '3.1', '3.2' ]
+        ruby: [ '3.1', '3.2', '3.3' ]
     steps:
       - uses: actions/checkout@v3
       - uses: ruby/setup-ruby@v1