package-indexer: disable R2 default integrity check

boto3 v1.36.0 introduced a new default integrity
check for S3 operations. This breaks R2's S3
compatibility API, as it does not support
integrity checks.

See
boto/boto3#4392

Signed-off-by: Attila Szakacs <attila.szakacs@axoflow.com>

packaging/package-indexer/remote_storage_synchronizer/s3_bucket_synchronizer.py

@@ -24,6 +24,7 @@
 from typing import Any, Dict, List
 
 from boto3 import Session
+from botocore.config import Config
 from botocore.exceptions import ClientError, EndpointConnectionError
 
 from .remote_storage_synchronizer import RemoteStorageSynchronizer
@@ -64,9 +65,16 @@ def __init__(self, access_key: str, secret_key: str, endpoint: str, bucket: str)
             aws_access_key_id=access_key,
             aws_secret_access_key=secret_key,
         )
+        client_config = Config(
+            client_context_params={
+                "request_checksum_calculation": "when_required",
+                "response_checksum_validation": "when_required",
+            },
+        )
         self.__client = self.__session.client(
             service_name="s3",
             endpoint_url=endpoint,
+            config=client_config,
         )
         self.__bucket = bucket
         super().__init__(