Merge pull request #38 from aidewoode/ruby-3-3

CI against Ruby 3.3

Author: aidewoode

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [2.7, '3.0', 3.1, 3.2, truffleruby-head]
+        ruby: ['2.7', '3.0', '3.1', '3.2', '3.3', truffleruby-head]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3