Update safety filter levels

Change-Id: Idf5990bf6ebf33da07318c0348a42bb7efd04582

Author: MarkDaoust

google/generativeai/vision_models/_vision_models.py

@@ -104,7 +104,7 @@ def to_mapping_value(value) -> struct_pb2.Struct:
 OutputMimeType = Literal["image/png", "image/jpeg"]
 OUTPUT_MIME_TYPES = OutputMimeType.__args__  # type: ignore
 
-SafetyFilterLevel = Literal["block_most", "block_some", "block_few"]
+SafetyFilterLevel = Literal["block_low_and_above", "block_medium_and_above", "block_only_high"]
 SAFETY_FILTER_LEVELS = SafetyFilterLevel.__args__  # type: ignore
 
 PersonGeneration = Literal["dont_allow", "allow_adult"]