Fix regression in s3.py (#507)

Author: aazo11

services/engine/dataherald/utils/s3.py

@@ -12,7 +12,7 @@ class S3:
     def __init__(self):
         self.settings = Settings()
 
-    def _get_client(self, access_key: str | None = None, secret_access_key: str | None = None, region: str | None = None): -> boto3.client:
+    def _get_client(self, access_key: str | None = None, secret_access_key: str | None = None, region: str | None = None) -> boto3.client:
         _access_key = access_key or self.settings.s3_aws_access_key_id
         _secret_access_key = secret_access_key or self.settings.s3_aws_secret_access_key
         _region = region or self.settings.s3_region