Support responses with partial content(using the Range request header) where HTTP code 206 is returned.

[danfilip]

When making partial requests using the Range header, to get a chunk of the file, the response HTTP code is 206, but it's not handled as a success code.

[onno-vos-dev]

Diff generated towards aws_s3 which is the main problematic file as per the PR to aws-erlang

Not a regular maintainer of this repo but LGTM

diff --git a/src/aws_s3.erl b/src/aws_s3.erl
index d722f8d..52c2b88 100644
--- a/src/aws_s3.erl
+++ b/src/aws_s3.erl
@@ -7446,6 +7446,7 @@ handle_response({ok, StatusCode, ResponseHeaders}, SuccessStatusCode, _DecodeBod
   when StatusCode =:= 200;
        StatusCode =:= 202;
        StatusCode =:= 204;
+       StatusCode =:= 206;
        StatusCode =:= SuccessStatusCode ->
     {ok, {StatusCode, ResponseHeaders}};
 handle_response({ok, StatusCode, ResponseHeaders}, _, _DecodeBody) ->
@@ -7454,6 +7455,7 @@ handle_response({ok, StatusCode, ResponseHeaders, Client}, SuccessStatusCode, De
   when StatusCode =:= 200;
        StatusCode =:= 202;
        StatusCode =:= 204;
+       StatusCode =:= 206;
        StatusCode =:= SuccessStatusCode ->
     case hackney:body(Client) of
         {ok, <<>>} when StatusCode =:= 200;