Update datafusion git tag to fix DenseUnion

[kylebarron]

Ref apache/datafusion#13797.

This is now working for geometries!

SELECT ST_GeomFromText('LINESTRING(-71.160281 42.258729,-71.160837 42.259113,-71.161144 42.25932)');

---- udf::native::io::wkt::test::test stdout ----
+----------------------------------------------------------------------------------------------------+
| st_geomfromtext(Utf8("LINESTRING(-71.160281 42.258729,-71.160837 42.259113,-71.161144 42.25932)")) |
+----------------------------------------------------------------------------------------------------+
| {=[{x: -71.160281, y: 42.258729}, {x: -71.160837, y: 42.259113}, {x: -71.161144, y: 42.25932}]}    |
+----------------------------------------------------------------------------------------------------+

🚀