[Fix][dlink-client]Fix date type convete bug in CDCSOURCE

[wanshicheng]

Purpose of the pull request

Fix date type convete bug in CDCSOURCE.
Because FlinkCDC returns the Days to January 1, 1970 with mysql.

Brief change log

Modified SQLSinkBuilder.java

Verify this pull request

test with mysql, but without oracle.

This change added tests and can be verified as follows: Create a table with date type. Then sync data from the table to other table.