chore: upgrade SQL kernel to 1.4.0

Co-authored-by: Isaac <no-reply@databricks.com>
Signed-off-by: Cathleen Yan <58714163+cathleeny@users.noreply.github.com>

Author: cathleeny

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Release History
 
 # Unreleased
+- Upgrade Databricks SQL Kernel to 1.4.0.
 - Preserve the originating session when re-fetching or concurrently polling async statements on the kernel backend.
 
 # 4.8.0 (2026-10-24)

KERNEL_REV

@@ -1 +1 @@
-b5e545adf70cb6fc7e9911e3d38fabd12f140f71
+c58f62c95f3651488f6270c0b45686614486d351

poetry.lock

@@ -67,10 +67,10 @@ requests-kerberos = {version = "^0.15.0", optional = true}
 # is ``abi3`` with ``Requires-Python: >=3.9`` (built ``abi3-py39``); the
 # dependency remains gated to the connector's Python >= 3.10 support floor.
 #
-# Floor is 1.3.0 (``^1.3.0`` == ``>=1.3.0,<2.0.0``), allowing compatible
+# Floor is 1.4.0 (``^1.4.0`` == ``>=1.4.0,<2.0.0``), allowing compatible
 # 1.x releases while keeping the next major upgrade deliberate. The kernel's
 # pyarrow constraint remains >=23.0.1,<24.
-databricks-sql-kernel = {version = "^1.3.0", optional = true, python = ">=3.10"}
+databricks-sql-kernel = {version = "^1.4.0", optional = true, python = ">=3.10"}
 
 
 [tool.poetry.extras]