message: graph: fix invalid types of accountEnabled
diff: "properties": {
  "accountEnabled": {
  "description": "whether or not the service principal account is enabled",
  - "type": "string"
  + "type": "boolean"
  },
  "appRoleAssignmentRequired": {
  "description": "Specifies whether an AppRoleAssignment to a user or group is required before Azure AD will issue a user or access token to the application.",
  "properties": {
  "accountEnabled": {
  "description": "whether or not the service principal account is enabled",
  - "type": "string"
  + "type": "boolean"
  },
  "alternativeNames": {
  "description": "alternative names",
  