fix lint

Author: DouweM

pydantic_ai_slim/pydantic_ai/messages.py

@@ -13,7 +13,7 @@
 import pydantic_core
 from genai_prices import calc_price, types as genai_types
 from opentelemetry._events import Event  # pyright: ignore[reportPrivateImportUsage]
-from typing_extensions import Self, deprecated
+from typing_extensions import deprecated
 
 from . import _otel_messages, _utils
 from ._utils import generate_tool_call_id as _generate_tool_call_id, now_utc as _now_utc
@@ -517,7 +517,7 @@ def narrow_type(bc: BinaryContent) -> BinaryContent | BinaryImage:
             return bc  # pragma: no cover
 
     @classmethod
-    def from_data_uri(cls, data_uri: str) -> Self:
+    def from_data_uri(cls, data_uri: str) -> BinaryContent:
         """Create a `BinaryContent` from a data URI."""
         prefix = 'data:'
         if not data_uri.startswith(prefix):