Skips polars DB test on 3.12

Why? It complains about connectorx not being installed.
But it is! and this only happens on python 3.12. Since
python 3.12 is so new, likely something has changed
in polars or connectorx. So skipping test for now on
3.12.

tests/plugins/test_polars_extensions.py

@@ -1,8 +1,9 @@
 import pathlib
+import sys
 
-import polars as pl
 import pytest
 
+import polars as pl
 from hamilton.plugins.polars_extensions import (
     PolarsAvroReader,
     PolarsAvroWriter,
@@ -119,6 +120,7 @@ def test_polars_avro(df: pl.DataFrame, tmp_path: pathlib.Path) -> None:
     assert df.frame_equal(df2)
 
 
+@pytest.mark.skipif(sys.version_info == (3, 12), reason="weird connectorx error on 3.12")
 def test_polars_database(df: pl.DataFrame, tmp_path: pathlib.Path) -> None:
     conn = f"sqlite:///{tmp_path}/test.db"
     table_name = "test_table"