Build the latest patch releases of TruffleRuby on ubuntu-26.04*

Author: eregon

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-26.04, ubuntu-26.04-arm ]
-        ruby: [ truffleruby+graalvm-33.0.1, truffleruby+graalvm-34.0.1 ]
+        ruby: [ truffleruby-33.0.1, truffleruby-34.0.1 ]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v6