GHA: Test against Java 25 (second try)

Change-Id: Iaee90ff6bf5584b38e8ebe0d50492e5aeeff719a
Reviewed-on: https://review.couchbase.org/c/couchbase-jvm-clients/+/234559
Tested-by: David Nault <[email protected]>
Reviewed-by: David Nault <[email protected]>

Author: dnault

.github/workflows/integration-test.yml

@@ -23,7 +23,7 @@ jobs:
           - server: '7.6.5'
             nodes: 3
             java-distribution: 'temurin'
-            java-version: '21'
+            java-version: '25'
 
           - server: 'community-7.6.2'
             nodes: 3