some line breaks and backslashes are missing in fix.sql generated by sync-diff-inspector

[Chad20N13]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   If possible, provide a recipe for reproducing the error.
   1、upstream database : varchar field contains some newlines and backslashes (\)
   2、downstream database : varchar field contains some newlines and backslashes ()
   3、then use sync-diff-inspector compare data,
   4、Some line breaks and backslashes are missing in the fix.sql

2. What did you expect to see?
   fix.sql have all line breaks and backslashes , just like upsteams data row.

3. What did you see instead?
   Some line breaks and backslashes are missing in the fix.sql

4. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?
   upstream : v3.0.8
   downstream: v6.5.7
   sync-diff-inspector : v6.5.3

5. which tool are you using?
   sync-diff-inspector : v6.5.3

6. what versionof tool are you using (pump -V or tidb-lightning -V or syncer -V)?

[Chad20N13]