Add Java 24-ea as an experimental build

- Add Java 23-ea as an experimental build
- Above is only for Ubuntu since these EAs are not on macOS 13 which we
need for Java 8

.github/workflows/maven.yml

@@ -30,9 +30,13 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-13]
         java: [ 8, 11, 17, 21, 22 ]
         experimental: [false]
-#        include:
-#          - java: 23-ea
-#            experimental: true
+        include:
+          - java: 23-ea
+            experimental: true
+            os: ubuntu-latest
+          - java: 24-ea
+            experimental: true
+            os: ubuntu-latest
 
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7