flink-cdc
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[FLINK-38730][build] Bump jdk version from 8 to 11.
Bump jdk version from 8 to 11. This will allow us to gradually start the compatibility work with Flink 2.x, Debezium 2.x, and Iceberg 1.10+.
Tested this PR with Java 17 in https://github.com/yuxiqian/flink-cdc/pull/123, seems some cases are failing because we need to explicitly --add-opens for specific modules.