Don't test Ruby 3.3, the rules does not support it

dentarg · dentarg · commit b6363bf234fe · 2025-12-15T12:19:52.000+01:00
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -18,7 +18,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - 3.3
           - 3.4
           - ruby-head
     steps:
