Build ruby-4.0.3

Author: ruby-builder-bot

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-22.04, ubuntu-24.04, ubuntu-22.04-arm, ubuntu-24.04-arm, macos-15-intel, macos-14 ]
-        ruby: [truffleruby-34.0.0, truffleruby+graalvm-34.0.0]
+        ruby: [ruby-4.0.3]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4