JDK 26 was released, time to switch to 27-ea

Author: ilgrosso

.github/workflows/crosschecks.yml

@@ -31,7 +31,7 @@ jobs:
       fail-fast: false
       matrix:
         language: ['java']
-        java: [ '21', '26-ea' ]
+        java: [ '21', '27-ea' ]
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps: