fix: fix types for HookContext.{client,provider}_metadata

Signed-off-by: Federico Bond <[email protected]>

Author: federicobond

openfeature/hook/__init__.py

@@ -4,8 +4,10 @@
 from dataclasses import dataclass
 from enum import Enum
 
+from openfeature.client import ClientMetadata
 from openfeature.evaluation_context import EvaluationContext
 from openfeature.flag_evaluation import FlagEvaluationDetails, FlagType
+from openfeature.provider.metadata import Metadata
 
 
 class HookType(Enum):
@@ -21,8 +23,8 @@ class HookContext:
     flag_type: FlagType
     default_value: typing.Any
     evaluation_context: EvaluationContext
-    client_metadata: typing.Optional[dict] = None
-    provider_metadata: typing.Optional[dict] = None
+    client_metadata: typing.Optional[ClientMetadata] = None
+    provider_metadata: typing.Optional[Metadata] = None
 
 
 class Hook: