update sql parser

see https://github.com/apache/datafusion-sqlparser-rs/blob/main/changelog/0.56.0.md
fixes #887

Author: lovasoa

CHANGELOG.md

@@ -14,6 +14,9 @@
  - Make the [Content-Security-Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CSP) customization more flexible, allowing you to harden the default security rules. Thanks to @guspower !
 - Fix vertically truncated text in the list component on empty descriptions.
   - ![screenshot](https://github.com/user-attachments/assets/df258e31-6698-4398-8ce5-4d7f396c03ef)
+ - Updated sqlparser to [v0.56](https://github.com/apache/datafusion-sqlparser-rs/blob/main/changelog/0.56.0.md), with many improvements including:
+  - Add support for the xmltable(...) function in postgres
+  - Add support for MSSQL IF/ELSE statements.
 
 ## v0.34 (2025-03-23)