Build ruby-3.4.0-rc1

Author: ruby-builder-bot

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-20.04, ubuntu-22.04, ubuntu-24.04, macos-13, macos-14 ]
-        ruby: [jruby-9.4.9.0]
+        ruby: [ruby-3.4.0-rc1]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
@@ -120,7 +120,7 @@ jobs:
       run: gh release upload "toolcache" "${{ steps.ruby.outputs.archive }}"
 
   buildJRubyWindows:
-    if: true
+    if: false
     strategy:
       fail-fast: false
       matrix: