chore: Migrate json field names to camelCase (4/4)

PiperOrigin-RevId: 758423361

src/google/adk/auth/auth_credential.py

@@ -15,13 +15,18 @@
 from enum import Enum
 from typing import Any, Dict, List, Optional
 
+from pydantic import alias_generators
 from pydantic import BaseModel
 from pydantic import ConfigDict
 from pydantic import Field
 
 
 class BaseModelWithConfig(BaseModel):
-  model_config = ConfigDict(extra="allow")
+  model_config = ConfigDict(
+      extra="allow",
+      alias_generator=alias_generators.to_camel,
+      populate_by_name=True,
+  )
   """The pydantic model config."""
 
 

src/google/adk/auth/auth_tool.py

@@ -12,13 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from pydantic import BaseModel
-
 from .auth_credential import AuthCredential
+from .auth_credential import BaseModelWithConfig
 from .auth_schemes import AuthScheme
 
 
-class AuthConfig(BaseModel):
+class AuthConfig(BaseModelWithConfig):
   """The auth config sent by tool asking client to collect auth credentials and
 
   adk and client will help to fill in the response
@@ -45,7 +44,7 @@ class AuthConfig(BaseModel):
   this field"""
 
 
-class AuthToolArguments(BaseModel):
+class AuthToolArguments(BaseModelWithConfig):
   """the arguments for the special long running function tool that is used to
 
   request end user credentials.