[bigfix][Connector-v2][cdc] move version to 1.6.4 (#3389)

Author: ic4y

seatunnel-connectors-v2/connector-cdc/connector-cdc-base/pom.xml

@@ -29,7 +29,7 @@
     <artifactId>connector-cdc-base</artifactId>
 
     <properties>
-        <debezium.version>2.0.0.Final</debezium.version>
+        <debezium.version>1.6.4.Final</debezium.version>
     </properties>
 
     <dependencies>