Update the AWS STS endpoint to be regional as the method is now regional. Required to support AWS GovCloud. Fixes https://github.com/abonas/kubeclient/issues/527
Update the AWS STS endpoint to be regional as the method is now regional. Required to support AWS GovCloud. Fixes https://github.com/abonas/kubeclient/issues/527

Signed-off-by: Adam Robinson <395d19009cdda7a34942f65fab2bfc71ad5284c0@gmail.com>

abonas/kubeclient