chore(ci): bump pydantic library to 2.0+ and boto3 to 1.34.32 (#4235)

* Adding banner for v3

* Bump boto3 and pydantic version

* Bump boto3 and pydantic version

* Making mypy happy

Author: leandrodamascena

Diff for: aws_lambda_powertools/event_handler/api_gateway.py

@@ -703,6 +703,8 @@ def _openapi_operation_parameters(
         from aws_lambda_powertools.event_handler.openapi.params import Param
 
         parameters = []
+        parameter: Dict[str, Any] = {}
+
         for param in all_route_params:
             field_info = param.field_info
             field_info = cast(Param, field_info)