chore: Upgrade version number to 1.4.0

Author: fit2cloud-chenyw

backend/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "sqlbot"
-version = "1.3.0"
+version = "1.4.0"
 description = ""
 requires-python = "==3.11.*"
 dependencies = [
@@ -39,7 +39,7 @@ dependencies = [
     "pyyaml (>=6.0.2,<7.0.0)",
     "fastapi-mcp (>=0.3.4,<0.4.0)",
     "tabulate>=0.9.0",
-    "sqlbot-xpack>=0.0.3.53,<1.0.0",
+    "sqlbot-xpack>=0.0.3.59,<0.0.4.0",
     "fastapi-cache2>=0.2.2",
     "sqlparse>=0.5.3",
     "redis>=6.2.0",