Insufficient Scopes Error!
You do not have sufficient scopes. This request requires you to have one of the following sets of scopes: [ [ "aws-provisioner:view-worker-type:gecko-1-b-linux" ], [ "aws-provisioner:manage-worker-type:gecko-1-b-linux" ] ]

You only have the scopes: [ "assume:mozillians-user:utkarsh009", "assume:project:taskcluster:tutorial", "auth:create-client:email/uanand009@gmail.com/", "auth:delete-client:email/uanand009@gmail.com/", "auth:reset-access-token:email/uanand009@gmail.com/", "auth:update-client:email/uanand009@gmail.com/", "queue:create-task:aws-provisioner-v1/tutorial", "secrets:get:garbage/", "secrets:set:garbage/" ]

In other words you are missing scopes from one of the options:
Option 0:
"aws-provisioner:view-worker-type:gecko-1-b-linux"
Option 1:
"aws-provisioner:manage-worker-type:gecko-1-b-linux"