[hotfix] Fix v4.0 JDK config in weekly.yml

Author: ferenc-csaky

.github/workflows/weekly.yml

@@ -34,7 +34,8 @@ jobs:
           branch: main
         }, {
           flink: 1.19.3,
-          branch: v4.0
+          branch: v4.0,
+          jdk: '8, 11'
         }]
     uses: apache/flink-connector-shared-utils/.github/workflows/ci.yml@ci_utils
     with: