fix: use set for tags (#62)

While our update function doesn't care about order,
terraform itself does when it tries to compare the live and declared
state before calling the update func.

Author: seanl-circle

docs/resources/endpoint.md

@@ -23,7 +23,7 @@ Endpoint resource
 ### Optional
 
 - `label` (String) Label to decorate an endpoint with
-- `tags` (List of String) Tags to associate with the endpoint
+- `tags` (Set of String) Tags to associate with the endpoint
 
 ### Read-Only
 

internal/provider/endpoint_resource.go

@@ -153,7 +153,7 @@ func (r *EndpointResource) Schema(ctx context.Context, req resource.SchemaReques
 					objectplanmodifier.UseStateForUnknown(),
 				},
 			},
-			"tags": schema.ListAttribute{
+			"tags": schema.SetAttribute{
 				ElementType:         types.StringType,
 				Optional:            true,
 				MarkdownDescription: "Tags to associate with the endpoint",