push.yml: test Java 24

Author: stephengold

.github/workflows/push.yml

@@ -39,14 +39,14 @@ jobs:
       - uses: actions/checkout@v4
       - run: ./gradlew build install --console=plain --stacktrace
 
-  Java23-Windows:
+  Java24-Windows:
     if: contains(toJson(github.event.commits), '[ci skip] ') == false
     runs-on: windows-2025
     steps:
       - uses: actions/setup-java@v4
         with:
           distribution: 'zulu'
-          java-version: 23
+          java-version: 24
       - uses: actions/checkout@v4
       - run: ./gradlew build install --console=plain --stacktrace
         shell: bash