[FLINK-34467] bump flink version to 1.20.0#137

leonardBang merged 1 commit intoapache:mainapache/flink-connector-jdbc:mainfrom

HuangZhenQiu:FLINK-34467-bump-flink-versionHuangZhenQiu/flink-connector-jdbc:FLINK-34467-bump-flink-versionCopy head branch name to clipboard