Fix object storage not working properly with Google S3 compatibility

Even in AWS S3 compatibility mode, Google now appears to reject requests that includes this header with this error:

Requests cannot specify both x-amz and x-goog headers

This has been submitted upstream via https://github.com/carrierwaveuploader/carrierwave/pull/2356.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53846