fix validation markers and update Databricks vendor version

Author: Mandukhai-Alimaa

go/validation/pytest.ini

@@ -19,6 +19,7 @@ xfail_strict = true
 
 markers =
     feature: test for a driver-specific feature
+    requires_features
 
 filterwarnings =
     error

go/validation/tests/databricks.py

@@ -23,7 +23,7 @@ class DatabricksQuirks(model.DriverQuirks):
     driver = "adbc_driver_databricks"
     driver_name = "ADBC Driver Foundry Driver for Databricks"
     vendor_name = "Databricks"
-    vendor_version = re.compile(r"(17\.[0-9]+.*|2025\.[0-9]+)")
+    vendor_version = re.compile(r"(17\.[0-9]+.*|2026\.[0-9]+)")
     short_version = "17"
     features = model.DriverFeatures(
         connection_get_table_schema=False,