Update databend-udf to 0.2.11 and use VECTOR type

Author: bohutang

databend_aiserver/udfs/embeddings.py

@@ -159,7 +159,7 @@ def _resolve_model(model: str) -> Tuple[str, int]:
 
 @udf(
     input_types=["STRING"],
-    result_type="ARRAY(NULLABLE(FLOAT))",
+    result_type="VECTOR(1024)",
     name="ai_embed_1024",
     io_threads=4,
     batch_mode=True,

pyproject.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 requires-python = ">=3.10"
 authors = [{ name = "Databend Labs" }]
 dependencies = [
-    "databend-udf==0.2.9",
+    "databend-udf==0.2.11",
     "opendal==0.45.1",
     "pypdf==4.0.0",
     "python-docx==1.2.0",