Add support for Ruby 3.3.0-preview3

Author: adfoster-r7

.github/workflows/verify.yml

@@ -67,7 +67,7 @@ jobs:
           - '3.0'
           - '3.1'
           - '3.2'
-          - '3.3.0-preview2'
+          - '3.3.0-preview3'
         os:
           - ubuntu-20.04
           - ubuntu-latest