Serverless.yml value is not accepted

My IDE (VSCode) is giving an error for the sample serverless.yml for the new defender-as-code serverless framework:

service: defender-ets
configValidationMode: error
frameworkVersion: "3"
useDotenv: true
provider:
  name: defender
  stage: ${opt:stage, 'dev'}
  stackName: "mystack"
  ssot: false

For provider.name: defender

My IDE says:

Value is not accepted. Valid values: "aws".yaml-schema: AwsProvider(1)

:computer: Environment

defender-as-code

Hi I recommend initializing your serverless project with our pre-configured template with this command sls install --url https://github.com/OpenZeppelin/defender-as-code/tree/main/template -n my-service once the package has been installed globally on your system

My IDE says:

Value is not accepted. Valid values: "aws".yaml-schema: AwsProvider(1)

You can ignore this error message