CI: test with java 23 (#4851)

Co-authored-by: Tatu Saloranta <[email protected]>

Author: pjfanning

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java_version: ['8', '11', '17', '21', '22']
+        java_version: ['8', '11', '17', '21', '23']
         os: ['ubuntu-22.04']
         include:
           - java_version: '8'