build: Tests against Ruby 3.3

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #347 will not alter performance

_{Comparing dd/test-ruby-33 (b6d5ed3) with master (1e53b95)}

Summary

✅ 6 untouched benchmarks

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.04%. Comparing base (1e53b95) to head (b6d5ed3).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #347 +/- ## ======================================= Coverage 85.04% 85.04% ======================================= Files 18 18 Lines 1759 1759 ======================================= Hits 1496 1496 Misses 263 263 ```

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