Optional ReadonlytypeCredential provider type. Optional — defaults to GATEWAY_IAM_ROLE (the gateway invokes the
tool with its own execution role). All GatewayTargetCredentialProviderType values are
accepted by the type, but MDAA validation currently supports only GATEWAY_IAM_ROLE and
rejects the others as not yet supported.
AWS: CredentialProviderConfiguration CredentialProviderType
Validation: Optional; a GatewayTargetCredentialProviderType; currently GATEWAY_IAM_ROLE
Outbound credential provider for a gateway target.
AWS: AWS::BedrockAgentCore::GatewayTarget CredentialProviderConfiguration