Replace GH CI Java 24 with 25

Replace Java 25-ea with Java 26-ea

Author: garydgregory

.github/workflows/maven.yml

@@ -27,10 +27,10 @@ jobs:
     continue-on-error: ${{ matrix.experimental }}
     strategy:
       matrix:
-        java: [ 8, 11, 17, 21, 24 ]
+        java: [ 8, 11, 17, 21, 25 ]
         experimental: [false]
         include:
-          - java: 25-ea
+          - java: 26-ea
             experimental: true        
 
     steps: