ORC-2132: Use Java 26 instead of 26-ea

Author: dongjoon-hyun

.github/workflows/build_and_test.yml

@@ -88,7 +88,7 @@ jobs:
             java: 17
             cxx: clang++
           - os: ubuntu-latest
-            java: 26-ea
+            java: 26
             cxx: clang++
     env:
       MAVEN_OPTS: -Xmx2g